James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 22 | * Copyright (C) 2004-2007 James Smart, Emulex Corporation |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | * Rewrite for host, target, device, and remote port attributes, |
| 24 | * statistics, and service functions... |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 25 | * Add vports, etc |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | * |
| 27 | */ |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/init.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 30 | #include <linux/slab.h> |
Christof Schmitt | 65d430f | 2009-10-30 17:59:29 +0100 | [diff] [blame] | 31 | #include <linux/delay.h> |
Andy Shevchenko | ecc3099 | 2010-08-10 18:01:27 -0700 | [diff] [blame] | 32 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <scsi/scsi_device.h> |
| 34 | #include <scsi/scsi_host.h> |
| 35 | #include <scsi/scsi_transport.h> |
| 36 | #include <scsi/scsi_transport_fc.h> |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 37 | #include <scsi/scsi_cmnd.h> |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 38 | #include <linux/netlink.h> |
| 39 | #include <net/netlink.h> |
| 40 | #include <scsi/scsi_netlink_fc.h> |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 41 | #include <scsi/scsi_bsg_fc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include "scsi_priv.h" |
FUJITA Tomonori | 7525236 | 2007-09-01 02:02:27 +0900 | [diff] [blame] | 43 | #include "scsi_transport_fc_internal.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 45 | static int fc_queue_work(struct Scsi_Host *, struct work_struct *); |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 46 | static void fc_vport_sched_delete(struct work_struct *work); |
Andrew Vasquez | a30c3f6 | 2008-07-18 08:32:52 -0700 | [diff] [blame] | 47 | static int fc_vport_setup(struct Scsi_Host *shost, int channel, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 48 | struct device *pdev, struct fc_vport_identifiers *ids, |
| 49 | struct fc_vport **vport); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 50 | static int fc_bsg_hostadd(struct Scsi_Host *, struct fc_host_attrs *); |
| 51 | static int fc_bsg_rportadd(struct Scsi_Host *, struct fc_rport *); |
| 52 | static void fc_bsg_remove(struct request_queue *); |
| 53 | static void fc_bsg_goose_queue(struct fc_rport *); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 54 | |
| 55 | /* |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 56 | * Module Parameters |
| 57 | */ |
| 58 | |
| 59 | /* |
| 60 | * dev_loss_tmo: the default number of seconds that the FC transport |
| 61 | * should insulate the loss of a remote port. |
| 62 | * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT. |
| 63 | */ |
| 64 | static unsigned int fc_dev_loss_tmo = 60; /* seconds */ |
| 65 | |
| 66 | module_param_named(dev_loss_tmo, fc_dev_loss_tmo, uint, S_IRUGO|S_IWUSR); |
| 67 | MODULE_PARM_DESC(dev_loss_tmo, |
| 68 | "Maximum number of seconds that the FC transport should" |
| 69 | " insulate the loss of a remote port. Once this value is" |
| 70 | " exceeded, the scsi target is removed. Value should be" |
| 71 | " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if" |
| 72 | " fast_io_fail_tmo is not set."); |
| 73 | |
| 74 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | * Redefine so that we can have same named attributes in the |
| 76 | * sdev/starget/host objects. |
| 77 | */ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 78 | #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
| 79 | struct device_attribute device_attr_##_prefix##_##_name = \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | __ATTR(_name,_mode,_show,_store) |
| 81 | |
| 82 | #define fc_enum_name_search(title, table_type, table) \ |
| 83 | static const char *get_fc_##title##_name(enum table_type table_key) \ |
| 84 | { \ |
| 85 | int i; \ |
| 86 | char *name = NULL; \ |
| 87 | \ |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 88 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | if (table[i].value == table_key) { \ |
| 90 | name = table[i].name; \ |
| 91 | break; \ |
| 92 | } \ |
| 93 | } \ |
| 94 | return name; \ |
| 95 | } |
| 96 | |
| 97 | #define fc_enum_name_match(title, table_type, table) \ |
| 98 | static int get_fc_##title##_match(const char *table_key, \ |
| 99 | enum table_type *value) \ |
| 100 | { \ |
| 101 | int i; \ |
| 102 | \ |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 103 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | if (strncmp(table_key, table[i].name, \ |
| 105 | table[i].matchlen) == 0) { \ |
| 106 | *value = table[i].value; \ |
| 107 | return 0; /* success */ \ |
| 108 | } \ |
| 109 | } \ |
| 110 | return 1; /* failure */ \ |
| 111 | } |
| 112 | |
| 113 | |
| 114 | /* Convert fc_port_type values to ascii string name */ |
| 115 | static struct { |
| 116 | enum fc_port_type value; |
| 117 | char *name; |
| 118 | } fc_port_type_names[] = { |
| 119 | { FC_PORTTYPE_UNKNOWN, "Unknown" }, |
| 120 | { FC_PORTTYPE_OTHER, "Other" }, |
| 121 | { FC_PORTTYPE_NOTPRESENT, "Not Present" }, |
| 122 | { FC_PORTTYPE_NPORT, "NPort (fabric via point-to-point)" }, |
| 123 | { FC_PORTTYPE_NLPORT, "NLPort (fabric via loop)" }, |
| 124 | { FC_PORTTYPE_LPORT, "LPort (private loop)" }, |
Christof Schmitt | 951948a | 2009-01-15 16:51:48 +0100 | [diff] [blame] | 125 | { FC_PORTTYPE_PTP, "Point-To-Point (direct nport connection)" }, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 126 | { FC_PORTTYPE_NPIV, "NPIV VPORT" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | }; |
| 128 | fc_enum_name_search(port_type, fc_port_type, fc_port_type_names) |
| 129 | #define FC_PORTTYPE_MAX_NAMELEN 50 |
| 130 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 131 | /* Reuse fc_port_type enum function for vport_type */ |
| 132 | #define get_fc_vport_type_name get_fc_port_type_name |
| 133 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 135 | /* Convert fc_host_event_code values to ascii string name */ |
| 136 | static const struct { |
| 137 | enum fc_host_event_code value; |
| 138 | char *name; |
| 139 | } fc_host_event_code_names[] = { |
| 140 | { FCH_EVT_LIP, "lip" }, |
| 141 | { FCH_EVT_LINKUP, "link_up" }, |
| 142 | { FCH_EVT_LINKDOWN, "link_down" }, |
| 143 | { FCH_EVT_LIPRESET, "lip_reset" }, |
| 144 | { FCH_EVT_RSCN, "rscn" }, |
| 145 | { FCH_EVT_ADAPTER_CHANGE, "adapter_chg" }, |
| 146 | { FCH_EVT_PORT_UNKNOWN, "port_unknown" }, |
| 147 | { FCH_EVT_PORT_ONLINE, "port_online" }, |
| 148 | { FCH_EVT_PORT_OFFLINE, "port_offline" }, |
| 149 | { FCH_EVT_PORT_FABRIC, "port_fabric" }, |
| 150 | { FCH_EVT_LINK_UNKNOWN, "link_unknown" }, |
| 151 | { FCH_EVT_VENDOR_UNIQUE, "vendor_unique" }, |
| 152 | }; |
| 153 | fc_enum_name_search(host_event_code, fc_host_event_code, |
| 154 | fc_host_event_code_names) |
| 155 | #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30 |
| 156 | |
| 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | /* Convert fc_port_state values to ascii string name */ |
| 159 | static struct { |
| 160 | enum fc_port_state value; |
| 161 | char *name; |
| 162 | } fc_port_state_names[] = { |
| 163 | { FC_PORTSTATE_UNKNOWN, "Unknown" }, |
| 164 | { FC_PORTSTATE_NOTPRESENT, "Not Present" }, |
| 165 | { FC_PORTSTATE_ONLINE, "Online" }, |
| 166 | { FC_PORTSTATE_OFFLINE, "Offline" }, |
| 167 | { FC_PORTSTATE_BLOCKED, "Blocked" }, |
| 168 | { FC_PORTSTATE_BYPASSED, "Bypassed" }, |
| 169 | { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics" }, |
| 170 | { FC_PORTSTATE_LINKDOWN, "Linkdown" }, |
| 171 | { FC_PORTSTATE_ERROR, "Error" }, |
| 172 | { FC_PORTSTATE_LOOPBACK, "Loopback" }, |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 173 | { FC_PORTSTATE_DELETED, "Deleted" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | }; |
| 175 | fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) |
| 176 | #define FC_PORTSTATE_MAX_NAMELEN 20 |
| 177 | |
| 178 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 179 | /* Convert fc_vport_state values to ascii string name */ |
| 180 | static struct { |
| 181 | enum fc_vport_state value; |
| 182 | char *name; |
| 183 | } fc_vport_state_names[] = { |
| 184 | { FC_VPORT_UNKNOWN, "Unknown" }, |
| 185 | { FC_VPORT_ACTIVE, "Active" }, |
| 186 | { FC_VPORT_DISABLED, "Disabled" }, |
| 187 | { FC_VPORT_LINKDOWN, "Linkdown" }, |
| 188 | { FC_VPORT_INITIALIZING, "Initializing" }, |
| 189 | { FC_VPORT_NO_FABRIC_SUPP, "No Fabric Support" }, |
| 190 | { FC_VPORT_NO_FABRIC_RSCS, "No Fabric Resources" }, |
| 191 | { FC_VPORT_FABRIC_LOGOUT, "Fabric Logout" }, |
| 192 | { FC_VPORT_FABRIC_REJ_WWN, "Fabric Rejected WWN" }, |
| 193 | { FC_VPORT_FAILED, "VPort Failed" }, |
| 194 | }; |
| 195 | fc_enum_name_search(vport_state, fc_vport_state, fc_vport_state_names) |
| 196 | #define FC_VPORTSTATE_MAX_NAMELEN 24 |
| 197 | |
| 198 | /* Reuse fc_vport_state enum function for vport_last_state */ |
| 199 | #define get_fc_vport_last_state_name get_fc_vport_state_name |
| 200 | |
| 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /* Convert fc_tgtid_binding_type values to ascii string name */ |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 203 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | enum fc_tgtid_binding_type value; |
| 205 | char *name; |
| 206 | int matchlen; |
| 207 | } fc_tgtid_binding_type_names[] = { |
| 208 | { FC_TGTID_BIND_NONE, "none", 4 }, |
| 209 | { FC_TGTID_BIND_BY_WWPN, "wwpn (World Wide Port Name)", 4 }, |
| 210 | { FC_TGTID_BIND_BY_WWNN, "wwnn (World Wide Node Name)", 4 }, |
| 211 | { FC_TGTID_BIND_BY_ID, "port_id (FC Address)", 7 }, |
| 212 | }; |
| 213 | fc_enum_name_search(tgtid_bind_type, fc_tgtid_binding_type, |
| 214 | fc_tgtid_binding_type_names) |
| 215 | fc_enum_name_match(tgtid_bind_type, fc_tgtid_binding_type, |
| 216 | fc_tgtid_binding_type_names) |
| 217 | #define FC_BINDTYPE_MAX_NAMELEN 30 |
| 218 | |
| 219 | |
| 220 | #define fc_bitfield_name_search(title, table) \ |
| 221 | static ssize_t \ |
| 222 | get_fc_##title##_names(u32 table_key, char *buf) \ |
| 223 | { \ |
| 224 | char *prefix = ""; \ |
| 225 | ssize_t len = 0; \ |
| 226 | int i; \ |
| 227 | \ |
Tobias Klauser | 6391a11 | 2006-06-08 22:23:48 -0700 | [diff] [blame] | 228 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | if (table[i].value & table_key) { \ |
| 230 | len += sprintf(buf + len, "%s%s", \ |
| 231 | prefix, table[i].name); \ |
| 232 | prefix = ", "; \ |
| 233 | } \ |
| 234 | } \ |
| 235 | len += sprintf(buf + len, "\n"); \ |
| 236 | return len; \ |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /* Convert FC_COS bit values to ascii string name */ |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 241 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | u32 value; |
| 243 | char *name; |
| 244 | } fc_cos_names[] = { |
| 245 | { FC_COS_CLASS1, "Class 1" }, |
| 246 | { FC_COS_CLASS2, "Class 2" }, |
| 247 | { FC_COS_CLASS3, "Class 3" }, |
| 248 | { FC_COS_CLASS4, "Class 4" }, |
| 249 | { FC_COS_CLASS6, "Class 6" }, |
| 250 | }; |
| 251 | fc_bitfield_name_search(cos, fc_cos_names) |
| 252 | |
| 253 | |
| 254 | /* Convert FC_PORTSPEED bit values to ascii string name */ |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 255 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | u32 value; |
| 257 | char *name; |
| 258 | } fc_port_speed_names[] = { |
| 259 | { FC_PORTSPEED_1GBIT, "1 Gbit" }, |
| 260 | { FC_PORTSPEED_2GBIT, "2 Gbit" }, |
| 261 | { FC_PORTSPEED_4GBIT, "4 Gbit" }, |
| 262 | { FC_PORTSPEED_10GBIT, "10 Gbit" }, |
James Smart | c3d2350 | 2007-03-12 14:16:35 -0500 | [diff] [blame] | 263 | { FC_PORTSPEED_8GBIT, "8 Gbit" }, |
| 264 | { FC_PORTSPEED_16GBIT, "16 Gbit" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | { FC_PORTSPEED_NOT_NEGOTIATED, "Not Negotiated" }, |
| 266 | }; |
| 267 | fc_bitfield_name_search(port_speed, fc_port_speed_names) |
| 268 | |
| 269 | |
| 270 | static int |
| 271 | show_fc_fc4s (char *buf, u8 *fc4_list) |
| 272 | { |
| 273 | int i, len=0; |
| 274 | |
| 275 | for (i = 0; i < FC_FC4_LIST_SIZE; i++, fc4_list++) |
| 276 | len += sprintf(buf + len , "0x%02x ", *fc4_list); |
| 277 | len += sprintf(buf + len, "\n"); |
| 278 | return len; |
| 279 | } |
| 280 | |
| 281 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 282 | /* Convert FC_PORT_ROLE bit values to ascii string name */ |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 283 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | u32 value; |
| 285 | char *name; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 286 | } fc_port_role_names[] = { |
| 287 | { FC_PORT_ROLE_FCP_TARGET, "FCP Target" }, |
| 288 | { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" }, |
| 289 | { FC_PORT_ROLE_IP_PORT, "IP Port" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | }; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 291 | fc_bitfield_name_search(port_roles, fc_port_role_names) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
| 293 | /* |
| 294 | * Define roles that are specific to port_id. Values are relative to ROLE_MASK. |
| 295 | */ |
| 296 | #define FC_WELLKNOWN_PORTID_MASK 0xfffff0 |
| 297 | #define FC_WELLKNOWN_ROLE_MASK 0x00000f |
| 298 | #define FC_FPORT_PORTID 0x00000e |
| 299 | #define FC_FABCTLR_PORTID 0x00000d |
| 300 | #define FC_DIRSRVR_PORTID 0x00000c |
| 301 | #define FC_TIMESRVR_PORTID 0x00000b |
| 302 | #define FC_MGMTSRVR_PORTID 0x00000a |
| 303 | |
| 304 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 305 | static void fc_timeout_deleted_rport(struct work_struct *work); |
| 306 | static void fc_timeout_fail_rport_io(struct work_struct *work); |
| 307 | static void fc_scsi_scan_rport(struct work_struct *work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
| 309 | /* |
| 310 | * Attribute counts pre object type... |
| 311 | * Increase these values if you add attributes |
| 312 | */ |
| 313 | #define FC_STARGET_NUM_ATTRS 3 |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 314 | #define FC_RPORT_NUM_ATTRS 10 |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 315 | #define FC_VPORT_NUM_ATTRS 9 |
James Smart | 4643682 | 2009-07-28 12:30:01 -0400 | [diff] [blame] | 316 | #define FC_HOST_NUM_ATTRS 22 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | struct fc_internal { |
| 319 | struct scsi_transport_template t; |
| 320 | struct fc_function_template *f; |
| 321 | |
| 322 | /* |
| 323 | * For attributes : each object has : |
| 324 | * An array of the actual attributes structures |
| 325 | * An array of null-terminated pointers to the attribute |
| 326 | * structures - used for mid-layer interaction. |
| 327 | * |
| 328 | * The attribute containers for the starget and host are are |
| 329 | * part of the midlayer. As the remote port is specific to the |
| 330 | * fc transport, we must provide the attribute container. |
| 331 | */ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 332 | struct device_attribute private_starget_attrs[ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | FC_STARGET_NUM_ATTRS]; |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 334 | struct device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 336 | struct device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; |
| 337 | struct device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
| 339 | struct transport_container rport_attr_cont; |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 340 | struct device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; |
| 341 | struct device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 342 | |
| 343 | struct transport_container vport_attr_cont; |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 344 | struct device_attribute private_vport_attrs[FC_VPORT_NUM_ATTRS]; |
| 345 | struct device_attribute *vport_attrs[FC_VPORT_NUM_ATTRS + 1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | }; |
| 347 | |
| 348 | #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) |
| 349 | |
James Bottomley | d0a7e57 | 2005-08-14 17:09:01 -0500 | [diff] [blame] | 350 | static int fc_target_setup(struct transport_container *tc, struct device *dev, |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 351 | struct device *cdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | { |
| 353 | struct scsi_target *starget = to_scsi_target(dev); |
| 354 | struct fc_rport *rport = starget_to_rport(starget); |
| 355 | |
| 356 | /* |
| 357 | * if parent is remote port, use values from remote port. |
| 358 | * Otherwise, this host uses the fc_transport, but not the |
| 359 | * remote port interface. As such, initialize to known non-values. |
| 360 | */ |
| 361 | if (rport) { |
| 362 | fc_starget_node_name(starget) = rport->node_name; |
| 363 | fc_starget_port_name(starget) = rport->port_name; |
| 364 | fc_starget_port_id(starget) = rport->port_id; |
| 365 | } else { |
| 366 | fc_starget_node_name(starget) = -1; |
| 367 | fc_starget_port_name(starget) = -1; |
| 368 | fc_starget_port_id(starget) = -1; |
| 369 | } |
| 370 | |
| 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | static DECLARE_TRANSPORT_CLASS(fc_transport_class, |
| 375 | "fc_transport", |
| 376 | fc_target_setup, |
| 377 | NULL, |
| 378 | NULL); |
| 379 | |
James Bottomley | d0a7e57 | 2005-08-14 17:09:01 -0500 | [diff] [blame] | 380 | static int fc_host_setup(struct transport_container *tc, struct device *dev, |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 381 | struct device *cdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | { |
| 383 | struct Scsi_Host *shost = dev_to_shost(dev); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 384 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 386 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | * Set default values easily detected by the midlayer as |
| 388 | * failure cases. The scsi lldd is responsible for initializing |
| 389 | * all transport attributes to valid values per host. |
| 390 | */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 391 | fc_host->node_name = -1; |
| 392 | fc_host->port_name = -1; |
| 393 | fc_host->permanent_port_name = -1; |
| 394 | fc_host->supported_classes = FC_COS_UNSPECIFIED; |
| 395 | memset(fc_host->supported_fc4s, 0, |
| 396 | sizeof(fc_host->supported_fc4s)); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 397 | fc_host->supported_speeds = FC_PORTSPEED_UNKNOWN; |
| 398 | fc_host->maxframe_size = -1; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 399 | fc_host->max_npiv_vports = 0; |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 400 | memset(fc_host->serial_number, 0, |
| 401 | sizeof(fc_host->serial_number)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 403 | fc_host->port_id = -1; |
| 404 | fc_host->port_type = FC_PORTTYPE_UNKNOWN; |
| 405 | fc_host->port_state = FC_PORTSTATE_UNKNOWN; |
| 406 | memset(fc_host->active_fc4s, 0, |
| 407 | sizeof(fc_host->active_fc4s)); |
| 408 | fc_host->speed = FC_PORTSPEED_UNKNOWN; |
| 409 | fc_host->fabric_name = -1; |
James Smart | b8d0821 | 2006-08-17 08:00:43 -0400 | [diff] [blame] | 410 | memset(fc_host->symbolic_name, 0, sizeof(fc_host->symbolic_name)); |
| 411 | memset(fc_host->system_hostname, 0, sizeof(fc_host->system_hostname)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 413 | fc_host->tgtid_bind_type = FC_TGTID_BIND_BY_WWPN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 415 | INIT_LIST_HEAD(&fc_host->rports); |
| 416 | INIT_LIST_HEAD(&fc_host->rport_bindings); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 417 | INIT_LIST_HEAD(&fc_host->vports); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 418 | fc_host->next_rport_number = 0; |
| 419 | fc_host->next_target_id = 0; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 420 | fc_host->next_vport_number = 0; |
| 421 | fc_host->npiv_vports_inuse = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
Kay Sievers | aab0de2 | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 423 | snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name), |
| 424 | "fc_wq_%d", shost->host_no); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 425 | fc_host->work_q = create_singlethread_workqueue( |
| 426 | fc_host->work_q_name); |
| 427 | if (!fc_host->work_q) |
| 428 | return -ENOMEM; |
| 429 | |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 430 | fc_host->dev_loss_tmo = fc_dev_loss_tmo; |
Kay Sievers | aab0de2 | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 431 | snprintf(fc_host->devloss_work_q_name, |
| 432 | sizeof(fc_host->devloss_work_q_name), |
| 433 | "fc_dl_%d", shost->host_no); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 434 | fc_host->devloss_work_q = create_singlethread_workqueue( |
| 435 | fc_host->devloss_work_q_name); |
| 436 | if (!fc_host->devloss_work_q) { |
| 437 | destroy_workqueue(fc_host->work_q); |
| 438 | fc_host->work_q = NULL; |
| 439 | return -ENOMEM; |
| 440 | } |
| 441 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 442 | fc_bsg_hostadd(shost, fc_host); |
| 443 | /* ignore any bsg add error - we just can't do sgio */ |
| 444 | |
| 445 | return 0; |
| 446 | } |
| 447 | |
| 448 | static int fc_host_remove(struct transport_container *tc, struct device *dev, |
| 449 | struct device *cdev) |
| 450 | { |
| 451 | struct Scsi_Host *shost = dev_to_shost(dev); |
| 452 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| 453 | |
| 454 | fc_bsg_remove(fc_host->rqst_q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | static DECLARE_TRANSPORT_CLASS(fc_host_class, |
| 459 | "fc_host", |
| 460 | fc_host_setup, |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 461 | fc_host_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | NULL); |
| 463 | |
| 464 | /* |
| 465 | * Setup and Remove actions for remote ports are handled |
| 466 | * in the service functions below. |
| 467 | */ |
| 468 | static DECLARE_TRANSPORT_CLASS(fc_rport_class, |
| 469 | "fc_remote_ports", |
| 470 | NULL, |
| 471 | NULL, |
| 472 | NULL); |
| 473 | |
| 474 | /* |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 475 | * Setup and Remove actions for virtual ports are handled |
| 476 | * in the service functions below. |
| 477 | */ |
| 478 | static DECLARE_TRANSPORT_CLASS(fc_vport_class, |
| 479 | "fc_vports", |
| 480 | NULL, |
| 481 | NULL, |
| 482 | NULL); |
| 483 | |
| 484 | /* |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 485 | * Netlink Infrastructure |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 486 | */ |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 487 | |
| 488 | static atomic_t fc_event_seq; |
| 489 | |
| 490 | /** |
| 491 | * fc_get_event_number - Obtain the next sequential FC event number |
| 492 | * |
| 493 | * Notes: |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 494 | * We could have inlined this, but it would have required fc_event_seq to |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 495 | * be exposed. For now, live with the subroutine call. |
| 496 | * Atomic used to avoid lock/unlock... |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 497 | */ |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 498 | u32 |
| 499 | fc_get_event_number(void) |
| 500 | { |
| 501 | return atomic_add_return(1, &fc_event_seq); |
| 502 | } |
| 503 | EXPORT_SYMBOL(fc_get_event_number); |
| 504 | |
| 505 | |
| 506 | /** |
| 507 | * fc_host_post_event - called to post an even on an fc_host. |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 508 | * @shost: host the event occurred on |
| 509 | * @event_number: fc event number obtained from get_fc_event_number() |
| 510 | * @event_code: fc_host event being posted |
| 511 | * @event_data: 32bits of data for the event being posted |
| 512 | * |
| 513 | * Notes: |
| 514 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 515 | */ |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 516 | void |
| 517 | fc_host_post_event(struct Scsi_Host *shost, u32 event_number, |
| 518 | enum fc_host_event_code event_code, u32 event_data) |
| 519 | { |
| 520 | struct sk_buff *skb; |
| 521 | struct nlmsghdr *nlh; |
| 522 | struct fc_nl_event *event; |
| 523 | const char *name; |
| 524 | u32 len, skblen; |
| 525 | int err; |
| 526 | |
| 527 | if (!scsi_nl_sock) { |
| 528 | err = -ENOENT; |
| 529 | goto send_fail; |
| 530 | } |
| 531 | |
| 532 | len = FC_NL_MSGALIGN(sizeof(*event)); |
| 533 | skblen = NLMSG_SPACE(len); |
| 534 | |
| 535 | skb = alloc_skb(skblen, GFP_KERNEL); |
| 536 | if (!skb) { |
| 537 | err = -ENOBUFS; |
| 538 | goto send_fail; |
| 539 | } |
| 540 | |
| 541 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, |
| 542 | skblen - sizeof(*nlh), 0); |
| 543 | if (!nlh) { |
| 544 | err = -ENOBUFS; |
| 545 | goto send_fail_skb; |
| 546 | } |
| 547 | event = NLMSG_DATA(nlh); |
| 548 | |
| 549 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, |
| 550 | FC_NL_ASYNC_EVENT, len); |
| 551 | event->seconds = get_seconds(); |
| 552 | event->vendor_id = 0; |
| 553 | event->host_no = shost->host_no; |
| 554 | event->event_datalen = sizeof(u32); /* bytes */ |
| 555 | event->event_num = event_number; |
| 556 | event->event_code = event_code; |
| 557 | event->event_data = event_data; |
| 558 | |
Pablo Neira Ayuso | ff491a7 | 2009-02-05 23:56:36 -0800 | [diff] [blame] | 559 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
| 560 | GFP_KERNEL); |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 561 | return; |
| 562 | |
| 563 | send_fail_skb: |
| 564 | kfree_skb(skb); |
| 565 | send_fail: |
| 566 | name = get_fc_host_event_code_name(event_code); |
| 567 | printk(KERN_WARNING |
| 568 | "%s: Dropped Event : host %d %s data 0x%08x - err %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 569 | __func__, shost->host_no, |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 570 | (name) ? name : "<unknown>", event_data, err); |
| 571 | return; |
| 572 | } |
| 573 | EXPORT_SYMBOL(fc_host_post_event); |
| 574 | |
| 575 | |
| 576 | /** |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 577 | * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 578 | * @shost: host the event occurred on |
| 579 | * @event_number: fc event number obtained from get_fc_event_number() |
| 580 | * @data_len: amount, in bytes, of vendor unique data |
| 581 | * @data_buf: pointer to vendor unique data |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 582 | * @vendor_id: Vendor id |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 583 | * |
| 584 | * Notes: |
| 585 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 586 | */ |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 587 | void |
| 588 | fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, |
James Smart | f14e2e2 | 2006-08-22 09:55:23 -0400 | [diff] [blame] | 589 | u32 data_len, char * data_buf, u64 vendor_id) |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 590 | { |
| 591 | struct sk_buff *skb; |
| 592 | struct nlmsghdr *nlh; |
| 593 | struct fc_nl_event *event; |
| 594 | u32 len, skblen; |
| 595 | int err; |
| 596 | |
| 597 | if (!scsi_nl_sock) { |
| 598 | err = -ENOENT; |
| 599 | goto send_vendor_fail; |
| 600 | } |
| 601 | |
| 602 | len = FC_NL_MSGALIGN(sizeof(*event) + data_len); |
| 603 | skblen = NLMSG_SPACE(len); |
| 604 | |
| 605 | skb = alloc_skb(skblen, GFP_KERNEL); |
| 606 | if (!skb) { |
| 607 | err = -ENOBUFS; |
| 608 | goto send_vendor_fail; |
| 609 | } |
| 610 | |
| 611 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, |
| 612 | skblen - sizeof(*nlh), 0); |
| 613 | if (!nlh) { |
| 614 | err = -ENOBUFS; |
| 615 | goto send_vendor_fail_skb; |
| 616 | } |
| 617 | event = NLMSG_DATA(nlh); |
| 618 | |
| 619 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, |
| 620 | FC_NL_ASYNC_EVENT, len); |
| 621 | event->seconds = get_seconds(); |
| 622 | event->vendor_id = vendor_id; |
| 623 | event->host_no = shost->host_no; |
| 624 | event->event_datalen = data_len; /* bytes */ |
| 625 | event->event_num = event_number; |
| 626 | event->event_code = FCH_EVT_VENDOR_UNIQUE; |
| 627 | memcpy(&event->event_data, data_buf, data_len); |
| 628 | |
Pablo Neira Ayuso | ff491a7 | 2009-02-05 23:56:36 -0800 | [diff] [blame] | 629 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
| 630 | GFP_KERNEL); |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 631 | return; |
| 632 | |
| 633 | send_vendor_fail_skb: |
| 634 | kfree_skb(skb); |
| 635 | send_vendor_fail: |
| 636 | printk(KERN_WARNING |
| 637 | "%s: Dropped Event : host %d vendor_unique - err %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 638 | __func__, shost->host_no, err); |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 639 | return; |
| 640 | } |
| 641 | EXPORT_SYMBOL(fc_host_post_vendor_event); |
| 642 | |
| 643 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
| 645 | static __init int fc_transport_init(void) |
| 646 | { |
James Smart | 84314fd | 2006-08-18 17:30:09 -0400 | [diff] [blame] | 647 | int error; |
| 648 | |
| 649 | atomic_set(&fc_event_seq, 0); |
| 650 | |
| 651 | error = transport_class_register(&fc_host_class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | if (error) |
| 653 | return error; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 654 | error = transport_class_register(&fc_vport_class); |
| 655 | if (error) |
Mike Christie | 48de68a | 2009-11-17 21:25:16 -0600 | [diff] [blame] | 656 | goto unreg_host_class; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | error = transport_class_register(&fc_rport_class); |
| 658 | if (error) |
Mike Christie | 48de68a | 2009-11-17 21:25:16 -0600 | [diff] [blame] | 659 | goto unreg_vport_class; |
| 660 | error = transport_class_register(&fc_transport_class); |
| 661 | if (error) |
| 662 | goto unreg_rport_class; |
| 663 | return 0; |
| 664 | |
| 665 | unreg_rport_class: |
| 666 | transport_class_unregister(&fc_rport_class); |
| 667 | unreg_vport_class: |
| 668 | transport_class_unregister(&fc_vport_class); |
| 669 | unreg_host_class: |
| 670 | transport_class_unregister(&fc_host_class); |
| 671 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | static void __exit fc_transport_exit(void) |
| 675 | { |
| 676 | transport_class_unregister(&fc_transport_class); |
| 677 | transport_class_unregister(&fc_rport_class); |
| 678 | transport_class_unregister(&fc_host_class); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 679 | transport_class_unregister(&fc_vport_class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | } |
| 681 | |
| 682 | /* |
| 683 | * FC Remote Port Attribute Management |
| 684 | */ |
| 685 | |
| 686 | #define fc_rport_show_function(field, format_string, sz, cast) \ |
| 687 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 688 | show_fc_rport_##field (struct device *dev, \ |
| 689 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 691 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
| 693 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 694 | if ((i->f->get_rport_##field) && \ |
| 695 | !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 696 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 697 | (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | i->f->get_rport_##field(rport); \ |
| 699 | return snprintf(buf, sz, format_string, cast rport->field); \ |
| 700 | } |
| 701 | |
| 702 | #define fc_rport_store_function(field) \ |
| 703 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 704 | store_fc_rport_##field(struct device *dev, \ |
| 705 | struct device_attribute *attr, \ |
| 706 | const char *buf, size_t count) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | { \ |
| 708 | int val; \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 709 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
| 711 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 712 | char *cp; \ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 713 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 714 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 715 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
| 716 | return -EBUSY; \ |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 717 | val = simple_strtoul(buf, &cp, 0); \ |
| 718 | if (*cp && (*cp != '\n')) \ |
| 719 | return -EINVAL; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | i->f->set_rport_##field(rport, val); \ |
| 721 | return count; \ |
| 722 | } |
| 723 | |
| 724 | #define fc_rport_rd_attr(field, format_string, sz) \ |
| 725 | fc_rport_show_function(field, format_string, sz, ) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 726 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | show_fc_rport_##field, NULL) |
| 728 | |
| 729 | #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ |
| 730 | fc_rport_show_function(field, format_string, sz, (cast)) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 731 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | show_fc_rport_##field, NULL) |
| 733 | |
| 734 | #define fc_rport_rw_attr(field, format_string, sz) \ |
| 735 | fc_rport_show_function(field, format_string, sz, ) \ |
| 736 | fc_rport_store_function(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 737 | static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | show_fc_rport_##field, \ |
| 739 | store_fc_rport_##field) |
| 740 | |
| 741 | |
| 742 | #define fc_private_rport_show_function(field, format_string, sz, cast) \ |
| 743 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 744 | show_fc_rport_##field (struct device *dev, \ |
| 745 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 747 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | return snprintf(buf, sz, format_string, cast rport->field); \ |
| 749 | } |
| 750 | |
| 751 | #define fc_private_rport_rd_attr(field, format_string, sz) \ |
| 752 | fc_private_rport_show_function(field, format_string, sz, ) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 753 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | show_fc_rport_##field, NULL) |
| 755 | |
| 756 | #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ |
| 757 | fc_private_rport_show_function(field, format_string, sz, (cast)) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 758 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | show_fc_rport_##field, NULL) |
| 760 | |
| 761 | |
| 762 | #define fc_private_rport_rd_enum_attr(title, maxlen) \ |
| 763 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 764 | show_fc_rport_##title (struct device *dev, \ |
| 765 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 767 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | const char *name; \ |
| 769 | name = get_fc_##title##_name(rport->title); \ |
| 770 | if (!name) \ |
| 771 | return -EINVAL; \ |
| 772 | return snprintf(buf, maxlen, "%s\n", name); \ |
| 773 | } \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 774 | static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | show_fc_rport_##title, NULL) |
| 776 | |
| 777 | |
| 778 | #define SETUP_RPORT_ATTRIBUTE_RD(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 779 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
| 781 | i->private_rport_attrs[count].store = NULL; \ |
| 782 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
| 783 | if (i->f->show_rport_##field) \ |
| 784 | count++ |
| 785 | |
| 786 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 787 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
| 789 | i->private_rport_attrs[count].store = NULL; \ |
| 790 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
| 791 | count++ |
| 792 | |
| 793 | #define SETUP_RPORT_ATTRIBUTE_RW(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 794 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | if (!i->f->set_rport_##field) { \ |
| 796 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
| 797 | i->private_rport_attrs[count].store = NULL; \ |
| 798 | } \ |
| 799 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
| 800 | if (i->f->show_rport_##field) \ |
| 801 | count++ |
| 802 | |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 803 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ |
| 804 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 805 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 806 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
| 807 | count++; \ |
| 808 | } |
| 809 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | |
| 811 | /* The FC Transport Remote Port Attributes: */ |
| 812 | |
| 813 | /* Fixed Remote Port Attributes */ |
| 814 | |
| 815 | fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); |
| 816 | |
| 817 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 818 | show_fc_rport_supported_classes (struct device *dev, |
| 819 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 821 | struct fc_rport *rport = transport_class_to_rport(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | if (rport->supported_classes == FC_COS_UNSPECIFIED) |
| 823 | return snprintf(buf, 20, "unspecified\n"); |
| 824 | return get_fc_cos_names(rport->supported_classes, buf); |
| 825 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 826 | static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | show_fc_rport_supported_classes, NULL); |
| 828 | |
| 829 | /* Dynamic Remote Port Attributes */ |
| 830 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 831 | /* |
| 832 | * dev_loss_tmo attribute |
| 833 | */ |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 834 | static int fc_str_to_dev_loss(const char *buf, unsigned long *val) |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 835 | { |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 836 | char *cp; |
| 837 | |
| 838 | *val = simple_strtoul(buf, &cp, 0); |
| 839 | if ((*cp && (*cp != '\n')) || (*val < 0)) |
| 840 | return -EINVAL; |
| 841 | /* |
| 842 | * Check for overflow; dev_loss_tmo is u32 |
| 843 | */ |
| 844 | if (*val > UINT_MAX) |
| 845 | return -EINVAL; |
| 846 | |
| 847 | return 0; |
| 848 | } |
| 849 | |
| 850 | static int fc_rport_set_dev_loss_tmo(struct fc_rport *rport, |
| 851 | unsigned long val) |
| 852 | { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 853 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 854 | struct fc_internal *i = to_fc_internal(shost->transportt); |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 855 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 856 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 857 | (rport->port_state == FC_PORTSTATE_DELETED) || |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 858 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
| 859 | return -EBUSY; |
Hannes Reinecke | f2818663 | 2009-12-15 09:26:06 +0100 | [diff] [blame] | 860 | /* |
Hannes Reinecke | 36dd288 | 2010-03-09 10:18:48 +0100 | [diff] [blame] | 861 | * Check for overflow; dev_loss_tmo is u32 |
| 862 | */ |
| 863 | if (val > UINT_MAX) |
| 864 | return -EINVAL; |
| 865 | |
| 866 | /* |
Hannes Reinecke | f2818663 | 2009-12-15 09:26:06 +0100 | [diff] [blame] | 867 | * If fast_io_fail is off we have to cap |
| 868 | * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT |
| 869 | */ |
| 870 | if (rport->fast_io_fail_tmo == -1 && |
| 871 | val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT) |
| 872 | return -EINVAL; |
| 873 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 874 | i->f->set_rport_dev_loss_tmo(rport, val); |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 875 | return 0; |
| 876 | } |
| 877 | |
| 878 | fc_rport_show_function(dev_loss_tmo, "%d\n", 20, ) |
| 879 | static ssize_t |
| 880 | store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, |
| 881 | const char *buf, size_t count) |
| 882 | { |
| 883 | struct fc_rport *rport = transport_class_to_rport(dev); |
| 884 | unsigned long val; |
| 885 | int rc; |
| 886 | |
| 887 | rc = fc_str_to_dev_loss(buf, &val); |
| 888 | if (rc) |
| 889 | return rc; |
| 890 | |
| 891 | rc = fc_rport_set_dev_loss_tmo(rport, val); |
| 892 | if (rc) |
| 893 | return rc; |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 894 | return count; |
| 895 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 896 | static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 897 | show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | |
| 899 | |
| 900 | /* Private Remote Port Attributes */ |
| 901 | |
| 902 | fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| 903 | fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| 904 | fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); |
| 905 | |
| 906 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 907 | show_fc_rport_roles (struct device *dev, struct device_attribute *attr, |
| 908 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 910 | struct fc_rport *rport = transport_class_to_rport(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | |
| 912 | /* identify any roles that are port_id specific */ |
| 913 | if ((rport->port_id != -1) && |
| 914 | (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == |
| 915 | FC_WELLKNOWN_PORTID_MASK) { |
| 916 | switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { |
| 917 | case FC_FPORT_PORTID: |
| 918 | return snprintf(buf, 30, "Fabric Port\n"); |
| 919 | case FC_FABCTLR_PORTID: |
| 920 | return snprintf(buf, 30, "Fabric Controller\n"); |
| 921 | case FC_DIRSRVR_PORTID: |
| 922 | return snprintf(buf, 30, "Directory Server\n"); |
| 923 | case FC_TIMESRVR_PORTID: |
| 924 | return snprintf(buf, 30, "Time Server\n"); |
| 925 | case FC_MGMTSRVR_PORTID: |
| 926 | return snprintf(buf, 30, "Management Server\n"); |
| 927 | default: |
| 928 | return snprintf(buf, 30, "Unknown Fabric Entity\n"); |
| 929 | } |
| 930 | } else { |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 931 | if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | return snprintf(buf, 20, "unknown\n"); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 933 | return get_fc_port_roles_names(rport->roles, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | } |
| 935 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 936 | static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | show_fc_rport_roles, NULL); |
| 938 | |
| 939 | fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); |
| 940 | fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); |
| 941 | |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 942 | /* |
| 943 | * fast_io_fail_tmo attribute |
| 944 | */ |
| 945 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 946 | show_fc_rport_fast_io_fail_tmo (struct device *dev, |
| 947 | struct device_attribute *attr, char *buf) |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 948 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 949 | struct fc_rport *rport = transport_class_to_rport(dev); |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 950 | |
| 951 | if (rport->fast_io_fail_tmo == -1) |
| 952 | return snprintf(buf, 5, "off\n"); |
| 953 | return snprintf(buf, 20, "%d\n", rport->fast_io_fail_tmo); |
| 954 | } |
| 955 | |
| 956 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 957 | store_fc_rport_fast_io_fail_tmo(struct device *dev, |
| 958 | struct device_attribute *attr, const char *buf, |
| 959 | size_t count) |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 960 | { |
| 961 | int val; |
| 962 | char *cp; |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 963 | struct fc_rport *rport = transport_class_to_rport(dev); |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 964 | |
| 965 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
| 966 | (rport->port_state == FC_PORTSTATE_DELETED) || |
| 967 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
| 968 | return -EBUSY; |
| 969 | if (strncmp(buf, "off", 3) == 0) |
| 970 | rport->fast_io_fail_tmo = -1; |
| 971 | else { |
| 972 | val = simple_strtoul(buf, &cp, 0); |
Hannes Reinecke | f2818663 | 2009-12-15 09:26:06 +0100 | [diff] [blame] | 973 | if ((*cp && (*cp != '\n')) || (val < 0)) |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 974 | return -EINVAL; |
Hannes Reinecke | f2818663 | 2009-12-15 09:26:06 +0100 | [diff] [blame] | 975 | /* |
| 976 | * Cap fast_io_fail by dev_loss_tmo or |
| 977 | * SCSI_DEVICE_BLOCK_MAX_TIMEOUT. |
| 978 | */ |
| 979 | if ((val >= rport->dev_loss_tmo) || |
| 980 | (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) |
| 981 | return -EINVAL; |
| 982 | |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 983 | rport->fast_io_fail_tmo = val; |
| 984 | } |
| 985 | return count; |
| 986 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 987 | static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 988 | show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | |
| 990 | |
| 991 | /* |
| 992 | * FC SCSI Target Attribute Management |
| 993 | */ |
| 994 | |
| 995 | /* |
| 996 | * Note: in the target show function we recognize when the remote |
Uwe Kleine-König | 732bee7 | 2010-06-11 12:16:59 +0200 | [diff] [blame] | 997 | * port is in the hierarchy and do not allow the driver to get |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | * involved in sysfs functions. The driver only gets involved if |
| 999 | * it's the "old" style that doesn't use rports. |
| 1000 | */ |
| 1001 | #define fc_starget_show_function(field, format_string, sz, cast) \ |
| 1002 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1003 | show_fc_starget_##field (struct device *dev, \ |
| 1004 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1006 | struct scsi_target *starget = transport_class_to_starget(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ |
| 1008 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 1009 | struct fc_rport *rport = starget_to_rport(starget); \ |
| 1010 | if (rport) \ |
| 1011 | fc_starget_##field(starget) = rport->field; \ |
| 1012 | else if (i->f->get_starget_##field) \ |
| 1013 | i->f->get_starget_##field(starget); \ |
| 1014 | return snprintf(buf, sz, format_string, \ |
| 1015 | cast fc_starget_##field(starget)); \ |
| 1016 | } |
| 1017 | |
| 1018 | #define fc_starget_rd_attr(field, format_string, sz) \ |
| 1019 | fc_starget_show_function(field, format_string, sz, ) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1020 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | show_fc_starget_##field, NULL) |
| 1022 | |
| 1023 | #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ |
| 1024 | fc_starget_show_function(field, format_string, sz, (cast)) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1025 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | show_fc_starget_##field, NULL) |
| 1027 | |
| 1028 | #define SETUP_STARGET_ATTRIBUTE_RD(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1029 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
| 1031 | i->private_starget_attrs[count].store = NULL; \ |
| 1032 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ |
| 1033 | if (i->f->show_starget_##field) \ |
| 1034 | count++ |
| 1035 | |
| 1036 | #define SETUP_STARGET_ATTRIBUTE_RW(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1037 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | if (!i->f->set_starget_##field) { \ |
| 1039 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
| 1040 | i->private_starget_attrs[count].store = NULL; \ |
| 1041 | } \ |
| 1042 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ |
| 1043 | if (i->f->show_starget_##field) \ |
| 1044 | count++ |
| 1045 | |
| 1046 | /* The FC Transport SCSI Target Attributes: */ |
| 1047 | fc_starget_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| 1048 | fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| 1049 | fc_starget_rd_attr(port_id, "0x%06x\n", 20); |
| 1050 | |
| 1051 | |
| 1052 | /* |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1053 | * FC Virtual Port Attribute Management |
| 1054 | */ |
| 1055 | |
| 1056 | #define fc_vport_show_function(field, format_string, sz, cast) \ |
| 1057 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1058 | show_fc_vport_##field (struct device *dev, \ |
| 1059 | struct device_attribute *attr, char *buf) \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1060 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1061 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1062 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
| 1063 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 1064 | if ((i->f->get_vport_##field) && \ |
| 1065 | !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \ |
| 1066 | i->f->get_vport_##field(vport); \ |
| 1067 | return snprintf(buf, sz, format_string, cast vport->field); \ |
| 1068 | } |
| 1069 | |
| 1070 | #define fc_vport_store_function(field) \ |
| 1071 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1072 | store_fc_vport_##field(struct device *dev, \ |
| 1073 | struct device_attribute *attr, \ |
| 1074 | const char *buf, size_t count) \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1075 | { \ |
| 1076 | int val; \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1077 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1078 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
| 1079 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 1080 | char *cp; \ |
| 1081 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ |
| 1082 | return -EBUSY; \ |
| 1083 | val = simple_strtoul(buf, &cp, 0); \ |
| 1084 | if (*cp && (*cp != '\n')) \ |
| 1085 | return -EINVAL; \ |
| 1086 | i->f->set_vport_##field(vport, val); \ |
| 1087 | return count; \ |
| 1088 | } |
| 1089 | |
| 1090 | #define fc_vport_store_str_function(field, slen) \ |
| 1091 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1092 | store_fc_vport_##field(struct device *dev, \ |
| 1093 | struct device_attribute *attr, \ |
| 1094 | const char *buf, size_t count) \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1095 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1096 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1097 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
| 1098 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 1099 | unsigned int cnt=count; \ |
| 1100 | \ |
| 1101 | /* count may include a LF at end of string */ \ |
| 1102 | if (buf[cnt-1] == '\n') \ |
| 1103 | cnt--; \ |
| 1104 | if (cnt > ((slen) - 1)) \ |
| 1105 | return -EINVAL; \ |
| 1106 | memcpy(vport->field, buf, cnt); \ |
| 1107 | i->f->set_vport_##field(vport); \ |
| 1108 | return count; \ |
| 1109 | } |
| 1110 | |
| 1111 | #define fc_vport_rd_attr(field, format_string, sz) \ |
| 1112 | fc_vport_show_function(field, format_string, sz, ) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1113 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1114 | show_fc_vport_##field, NULL) |
| 1115 | |
| 1116 | #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \ |
| 1117 | fc_vport_show_function(field, format_string, sz, (cast)) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1118 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1119 | show_fc_vport_##field, NULL) |
| 1120 | |
| 1121 | #define fc_vport_rw_attr(field, format_string, sz) \ |
| 1122 | fc_vport_show_function(field, format_string, sz, ) \ |
| 1123 | fc_vport_store_function(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1124 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1125 | show_fc_vport_##field, \ |
| 1126 | store_fc_vport_##field) |
| 1127 | |
| 1128 | #define fc_private_vport_show_function(field, format_string, sz, cast) \ |
| 1129 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1130 | show_fc_vport_##field (struct device *dev, \ |
| 1131 | struct device_attribute *attr, char *buf) \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1132 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1133 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1134 | return snprintf(buf, sz, format_string, cast vport->field); \ |
| 1135 | } |
| 1136 | |
| 1137 | #define fc_private_vport_store_u32_function(field) \ |
| 1138 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1139 | store_fc_vport_##field(struct device *dev, \ |
| 1140 | struct device_attribute *attr, \ |
| 1141 | const char *buf, size_t count) \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1142 | { \ |
| 1143 | u32 val; \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1144 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1145 | char *cp; \ |
| 1146 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ |
| 1147 | return -EBUSY; \ |
| 1148 | val = simple_strtoul(buf, &cp, 0); \ |
| 1149 | if (*cp && (*cp != '\n')) \ |
| 1150 | return -EINVAL; \ |
| 1151 | vport->field = val; \ |
| 1152 | return count; \ |
| 1153 | } |
| 1154 | |
| 1155 | |
| 1156 | #define fc_private_vport_rd_attr(field, format_string, sz) \ |
| 1157 | fc_private_vport_show_function(field, format_string, sz, ) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1158 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1159 | show_fc_vport_##field, NULL) |
| 1160 | |
| 1161 | #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \ |
| 1162 | fc_private_vport_show_function(field, format_string, sz, (cast)) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1163 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1164 | show_fc_vport_##field, NULL) |
| 1165 | |
| 1166 | #define fc_private_vport_rw_u32_attr(field, format_string, sz) \ |
| 1167 | fc_private_vport_show_function(field, format_string, sz, ) \ |
| 1168 | fc_private_vport_store_u32_function(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1169 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1170 | show_fc_vport_##field, \ |
| 1171 | store_fc_vport_##field) |
| 1172 | |
| 1173 | |
| 1174 | #define fc_private_vport_rd_enum_attr(title, maxlen) \ |
| 1175 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1176 | show_fc_vport_##title (struct device *dev, \ |
| 1177 | struct device_attribute *attr, \ |
| 1178 | char *buf) \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1179 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1180 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1181 | const char *name; \ |
| 1182 | name = get_fc_##title##_name(vport->title); \ |
| 1183 | if (!name) \ |
| 1184 | return -EINVAL; \ |
| 1185 | return snprintf(buf, maxlen, "%s\n", name); \ |
| 1186 | } \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1187 | static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1188 | show_fc_vport_##title, NULL) |
| 1189 | |
| 1190 | |
| 1191 | #define SETUP_VPORT_ATTRIBUTE_RD(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1192 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1193 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
| 1194 | i->private_vport_attrs[count].store = NULL; \ |
| 1195 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
| 1196 | if (i->f->get_##field) \ |
| 1197 | count++ |
| 1198 | /* NOTE: Above MACRO differs: checks function not show bit */ |
| 1199 | |
| 1200 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1201 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1202 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
| 1203 | i->private_vport_attrs[count].store = NULL; \ |
| 1204 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
| 1205 | count++ |
| 1206 | |
| 1207 | #define SETUP_VPORT_ATTRIBUTE_WR(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1208 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1209 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
| 1210 | if (i->f->field) \ |
| 1211 | count++ |
| 1212 | /* NOTE: Above MACRO differs: checks function */ |
| 1213 | |
| 1214 | #define SETUP_VPORT_ATTRIBUTE_RW(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1215 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1216 | if (!i->f->set_vport_##field) { \ |
| 1217 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
| 1218 | i->private_vport_attrs[count].store = NULL; \ |
| 1219 | } \ |
| 1220 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
| 1221 | count++ |
| 1222 | /* NOTE: Above MACRO differs: does not check show bit */ |
| 1223 | |
| 1224 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \ |
| 1225 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1226 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1227 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
| 1228 | count++; \ |
| 1229 | } |
| 1230 | |
| 1231 | |
| 1232 | /* The FC Transport Virtual Port Attributes: */ |
| 1233 | |
| 1234 | /* Fixed Virtual Port Attributes */ |
| 1235 | |
| 1236 | /* Dynamic Virtual Port Attributes */ |
| 1237 | |
| 1238 | /* Private Virtual Port Attributes */ |
| 1239 | |
| 1240 | fc_private_vport_rd_enum_attr(vport_state, FC_VPORTSTATE_MAX_NAMELEN); |
| 1241 | fc_private_vport_rd_enum_attr(vport_last_state, FC_VPORTSTATE_MAX_NAMELEN); |
| 1242 | fc_private_vport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| 1243 | fc_private_vport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| 1244 | |
| 1245 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1246 | show_fc_vport_roles (struct device *dev, struct device_attribute *attr, |
| 1247 | char *buf) |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1248 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1249 | struct fc_vport *vport = transport_class_to_vport(dev); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1250 | |
| 1251 | if (vport->roles == FC_PORT_ROLE_UNKNOWN) |
| 1252 | return snprintf(buf, 20, "unknown\n"); |
| 1253 | return get_fc_port_roles_names(vport->roles, buf); |
| 1254 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1255 | static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1256 | |
| 1257 | fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); |
| 1258 | |
| 1259 | fc_private_vport_show_function(symbolic_name, "%s\n", |
| 1260 | FC_VPORT_SYMBOLIC_NAMELEN + 1, ) |
| 1261 | fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1262 | static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1263 | show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); |
| 1264 | |
| 1265 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1266 | store_fc_vport_delete(struct device *dev, struct device_attribute *attr, |
| 1267 | const char *buf, size_t count) |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1268 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1269 | struct fc_vport *vport = transport_class_to_vport(dev); |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 1270 | struct Scsi_Host *shost = vport_to_shost(vport); |
Gal Rosen | 0d9dc7c | 2010-01-21 10:15:32 +0200 | [diff] [blame] | 1271 | unsigned long flags; |
| 1272 | |
| 1273 | spin_lock_irqsave(shost->host_lock, flags); |
| 1274 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) { |
| 1275 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1276 | return -EBUSY; |
| 1277 | } |
| 1278 | vport->flags |= FC_VPORT_DELETING; |
| 1279 | spin_unlock_irqrestore(shost->host_lock, flags); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1280 | |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 1281 | fc_queue_work(shost, &vport->vport_delete_work); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1282 | return count; |
| 1283 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1284 | static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1285 | NULL, store_fc_vport_delete); |
| 1286 | |
| 1287 | |
| 1288 | /* |
| 1289 | * Enable/Disable vport |
| 1290 | * Write "1" to disable, write "0" to enable |
| 1291 | */ |
| 1292 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1293 | store_fc_vport_disable(struct device *dev, struct device_attribute *attr, |
| 1294 | const char *buf, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1295 | size_t count) |
| 1296 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1297 | struct fc_vport *vport = transport_class_to_vport(dev); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1298 | struct Scsi_Host *shost = vport_to_shost(vport); |
| 1299 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 1300 | int stat; |
| 1301 | |
| 1302 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) |
| 1303 | return -EBUSY; |
| 1304 | |
| 1305 | if (*buf == '0') { |
| 1306 | if (vport->vport_state != FC_VPORT_DISABLED) |
| 1307 | return -EALREADY; |
| 1308 | } else if (*buf == '1') { |
| 1309 | if (vport->vport_state == FC_VPORT_DISABLED) |
| 1310 | return -EALREADY; |
| 1311 | } else |
| 1312 | return -EINVAL; |
| 1313 | |
| 1314 | stat = i->f->vport_disable(vport, ((*buf == '0') ? false : true)); |
| 1315 | return stat ? stat : count; |
| 1316 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1317 | static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1318 | NULL, store_fc_vport_disable); |
| 1319 | |
| 1320 | |
| 1321 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | * Host Attribute Management |
| 1323 | */ |
| 1324 | |
| 1325 | #define fc_host_show_function(field, format_string, sz, cast) \ |
| 1326 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1327 | show_fc_host_##field (struct device *dev, \ |
| 1328 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1330 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 1332 | if (i->f->get_host_##field) \ |
| 1333 | i->f->get_host_##field(shost); \ |
| 1334 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
| 1335 | } |
| 1336 | |
| 1337 | #define fc_host_store_function(field) \ |
| 1338 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1339 | store_fc_host_##field(struct device *dev, \ |
| 1340 | struct device_attribute *attr, \ |
| 1341 | const char *buf, size_t count) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | { \ |
| 1343 | int val; \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1344 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 1346 | char *cp; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | \ |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 1348 | val = simple_strtoul(buf, &cp, 0); \ |
| 1349 | if (*cp && (*cp != '\n')) \ |
| 1350 | return -EINVAL; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | i->f->set_host_##field(shost, val); \ |
| 1352 | return count; \ |
| 1353 | } |
| 1354 | |
James Smart | b8d0821 | 2006-08-17 08:00:43 -0400 | [diff] [blame] | 1355 | #define fc_host_store_str_function(field, slen) \ |
| 1356 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1357 | store_fc_host_##field(struct device *dev, \ |
| 1358 | struct device_attribute *attr, \ |
| 1359 | const char *buf, size_t count) \ |
James Smart | b8d0821 | 2006-08-17 08:00:43 -0400 | [diff] [blame] | 1360 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1361 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
James Smart | b8d0821 | 2006-08-17 08:00:43 -0400 | [diff] [blame] | 1362 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 1363 | unsigned int cnt=count; \ |
| 1364 | \ |
| 1365 | /* count may include a LF at end of string */ \ |
| 1366 | if (buf[cnt-1] == '\n') \ |
| 1367 | cnt--; \ |
| 1368 | if (cnt > ((slen) - 1)) \ |
| 1369 | return -EINVAL; \ |
| 1370 | memcpy(fc_host_##field(shost), buf, cnt); \ |
| 1371 | i->f->set_host_##field(shost); \ |
| 1372 | return count; \ |
| 1373 | } |
| 1374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | #define fc_host_rd_attr(field, format_string, sz) \ |
| 1376 | fc_host_show_function(field, format_string, sz, ) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1377 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | show_fc_host_##field, NULL) |
| 1379 | |
| 1380 | #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ |
| 1381 | fc_host_show_function(field, format_string, sz, (cast)) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1382 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | show_fc_host_##field, NULL) |
| 1384 | |
| 1385 | #define fc_host_rw_attr(field, format_string, sz) \ |
| 1386 | fc_host_show_function(field, format_string, sz, ) \ |
| 1387 | fc_host_store_function(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1388 | static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | show_fc_host_##field, \ |
| 1390 | store_fc_host_##field) |
| 1391 | |
| 1392 | #define fc_host_rd_enum_attr(title, maxlen) \ |
| 1393 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1394 | show_fc_host_##title (struct device *dev, \ |
| 1395 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1397 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 1399 | const char *name; \ |
| 1400 | if (i->f->get_host_##title) \ |
| 1401 | i->f->get_host_##title(shost); \ |
| 1402 | name = get_fc_##title##_name(fc_host_##title(shost)); \ |
| 1403 | if (!name) \ |
| 1404 | return -EINVAL; \ |
| 1405 | return snprintf(buf, maxlen, "%s\n", name); \ |
| 1406 | } \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1407 | static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | |
| 1409 | #define SETUP_HOST_ATTRIBUTE_RD(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1410 | i->private_host_attrs[count] = device_attr_host_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
| 1412 | i->private_host_attrs[count].store = NULL; \ |
| 1413 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
| 1414 | if (i->f->show_host_##field) \ |
| 1415 | count++ |
| 1416 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1417 | #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1418 | i->private_host_attrs[count] = device_attr_host_##field; \ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1419 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
| 1420 | i->private_host_attrs[count].store = NULL; \ |
| 1421 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
| 1422 | count++ |
| 1423 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1425 | i->private_host_attrs[count] = device_attr_host_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | if (!i->f->set_host_##field) { \ |
| 1427 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
| 1428 | i->private_host_attrs[count].store = NULL; \ |
| 1429 | } \ |
| 1430 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
| 1431 | if (i->f->show_host_##field) \ |
| 1432 | count++ |
| 1433 | |
| 1434 | |
| 1435 | #define fc_private_host_show_function(field, format_string, sz, cast) \ |
| 1436 | static ssize_t \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1437 | show_fc_host_##field (struct device *dev, \ |
| 1438 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1440 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
| 1442 | } |
| 1443 | |
| 1444 | #define fc_private_host_rd_attr(field, format_string, sz) \ |
| 1445 | fc_private_host_show_function(field, format_string, sz, ) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1446 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | show_fc_host_##field, NULL) |
| 1448 | |
| 1449 | #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ |
| 1450 | fc_private_host_show_function(field, format_string, sz, (cast)) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1451 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | show_fc_host_##field, NULL) |
| 1453 | |
| 1454 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1455 | i->private_host_attrs[count] = device_attr_host_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
| 1457 | i->private_host_attrs[count].store = NULL; \ |
| 1458 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
| 1459 | count++ |
| 1460 | |
| 1461 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 1462 | { \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1463 | i->private_host_attrs[count] = device_attr_host_##field; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 1465 | count++; \ |
| 1466 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | |
| 1468 | |
| 1469 | /* Fixed Host Attributes */ |
| 1470 | |
| 1471 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1472 | show_fc_host_supported_classes (struct device *dev, |
| 1473 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1475 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | |
| 1477 | if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) |
| 1478 | return snprintf(buf, 20, "unspecified\n"); |
| 1479 | |
| 1480 | return get_fc_cos_names(fc_host_supported_classes(shost), buf); |
| 1481 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1482 | static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | show_fc_host_supported_classes, NULL); |
| 1484 | |
| 1485 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1486 | show_fc_host_supported_fc4s (struct device *dev, |
| 1487 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1489 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
| 1491 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1492 | static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | show_fc_host_supported_fc4s, NULL); |
| 1494 | |
| 1495 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1496 | show_fc_host_supported_speeds (struct device *dev, |
| 1497 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1499 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | |
| 1501 | if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) |
| 1502 | return snprintf(buf, 20, "unknown\n"); |
| 1503 | |
| 1504 | return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); |
| 1505 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1506 | static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | show_fc_host_supported_speeds, NULL); |
| 1508 | |
| 1509 | |
| 1510 | fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| 1511 | 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] | 1512 | fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
| 1513 | unsigned long long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1515 | fc_private_host_rd_attr(max_npiv_vports, "%u\n", 20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
| 1517 | |
| 1518 | |
| 1519 | /* Dynamic Host Attributes */ |
| 1520 | |
| 1521 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1522 | show_fc_host_active_fc4s (struct device *dev, |
| 1523 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1525 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 1527 | |
| 1528 | if (i->f->get_host_active_fc4s) |
| 1529 | i->f->get_host_active_fc4s(shost); |
| 1530 | |
| 1531 | return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); |
| 1532 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1533 | static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | show_fc_host_active_fc4s, NULL); |
| 1535 | |
| 1536 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1537 | show_fc_host_speed (struct device *dev, |
| 1538 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1540 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 1542 | |
| 1543 | if (i->f->get_host_speed) |
| 1544 | i->f->get_host_speed(shost); |
| 1545 | |
| 1546 | if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) |
| 1547 | return snprintf(buf, 20, "unknown\n"); |
| 1548 | |
| 1549 | return get_fc_port_speed_names(fc_host_speed(shost), buf); |
| 1550 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1551 | static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | show_fc_host_speed, NULL); |
| 1553 | |
| 1554 | |
| 1555 | fc_host_rd_attr(port_id, "0x%06x\n", 20); |
| 1556 | fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); |
| 1557 | fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); |
| 1558 | fc_host_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long); |
James Smart | 016131b | 2006-08-14 08:20:25 -0400 | [diff] [blame] | 1559 | fc_host_rd_attr(symbolic_name, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | |
James Smart | b8d0821 | 2006-08-17 08:00:43 -0400 | [diff] [blame] | 1561 | fc_private_host_show_function(system_hostname, "%s\n", |
| 1562 | FC_SYMBOLIC_NAME_SIZE + 1, ) |
| 1563 | fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1564 | static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
James Smart | b8d0821 | 2006-08-17 08:00:43 -0400 | [diff] [blame] | 1565 | show_fc_host_system_hostname, store_fc_host_system_hostname); |
| 1566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | |
| 1568 | /* Private Host Attributes */ |
| 1569 | |
| 1570 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1571 | show_fc_private_host_tgtid_bind_type(struct device *dev, |
| 1572 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1574 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | const char *name; |
| 1576 | |
| 1577 | name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); |
| 1578 | if (!name) |
| 1579 | return -EINVAL; |
| 1580 | return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s\n", name); |
| 1581 | } |
| 1582 | |
James.Smart@Emulex.Com | d16794f6a | 2005-10-05 13:50:08 -0400 | [diff] [blame] | 1583 | #define get_list_head_entry(pos, head, member) \ |
| 1584 | pos = list_entry((head)->next, typeof(*pos), member) |
| 1585 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1587 | store_fc_private_host_tgtid_bind_type(struct device *dev, |
| 1588 | struct device_attribute *attr, const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1590 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
James.Smart@Emulex.Com | d16794f6a | 2005-10-05 13:50:08 -0400 | [diff] [blame] | 1591 | struct fc_rport *rport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | enum fc_tgtid_binding_type val; |
| 1593 | unsigned long flags; |
| 1594 | |
| 1595 | if (get_fc_tgtid_bind_type_match(buf, &val)) |
| 1596 | return -EINVAL; |
| 1597 | |
| 1598 | /* if changing bind type, purge all unused consistent bindings */ |
| 1599 | if (val != fc_host_tgtid_bind_type(shost)) { |
| 1600 | spin_lock_irqsave(shost->host_lock, flags); |
James.Smart@Emulex.Com | d16794f6a | 2005-10-05 13:50:08 -0400 | [diff] [blame] | 1601 | while (!list_empty(&fc_host_rport_bindings(shost))) { |
| 1602 | get_list_head_entry(rport, |
| 1603 | &fc_host_rport_bindings(shost), peers); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 1604 | list_del(&rport->peers); |
| 1605 | rport->port_state = FC_PORTSTATE_DELETED; |
| 1606 | fc_queue_work(shost, &rport->rport_delete_work); |
James.Smart@Emulex.Com | d16794f6a | 2005-10-05 13:50:08 -0400 | [diff] [blame] | 1607 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1609 | } |
| 1610 | |
| 1611 | fc_host_tgtid_bind_type(shost) = val; |
| 1612 | return count; |
| 1613 | } |
| 1614 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1615 | static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | show_fc_private_host_tgtid_bind_type, |
| 1617 | store_fc_private_host_tgtid_bind_type); |
| 1618 | |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 1619 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1620 | store_fc_private_host_issue_lip(struct device *dev, |
| 1621 | struct device_attribute *attr, const char *buf, size_t count) |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 1622 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1623 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 1624 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 1625 | int ret; |
| 1626 | |
| 1627 | /* ignore any data value written to the attribute */ |
| 1628 | if (i->f->issue_fc_host_lip) { |
| 1629 | ret = i->f->issue_fc_host_lip(shost); |
| 1630 | return ret ? ret: count; |
| 1631 | } |
| 1632 | |
| 1633 | return -ENOENT; |
| 1634 | } |
| 1635 | |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1636 | static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 1637 | store_fc_private_host_issue_lip); |
| 1638 | |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 1639 | static ssize_t |
| 1640 | store_fc_private_host_dev_loss_tmo(struct device *dev, |
| 1641 | struct device_attribute *attr, |
| 1642 | const char *buf, size_t count) |
| 1643 | { |
| 1644 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
| 1645 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| 1646 | struct fc_rport *rport; |
| 1647 | unsigned long val, flags; |
| 1648 | int rc; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1649 | |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 1650 | rc = fc_str_to_dev_loss(buf, &val); |
| 1651 | if (rc) |
| 1652 | return rc; |
| 1653 | |
| 1654 | fc_host_dev_loss_tmo(shost) = val; |
| 1655 | spin_lock_irqsave(shost->host_lock, flags); |
| 1656 | list_for_each_entry(rport, &fc_host->rports, peers) |
| 1657 | fc_rport_set_dev_loss_tmo(rport, val); |
| 1658 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1659 | return count; |
| 1660 | } |
| 1661 | |
| 1662 | fc_private_host_show_function(dev_loss_tmo, "%d\n", 20, ); |
| 1663 | static FC_DEVICE_ATTR(host, dev_loss_tmo, S_IRUGO | S_IWUSR, |
| 1664 | show_fc_host_dev_loss_tmo, |
| 1665 | store_fc_private_host_dev_loss_tmo); |
| 1666 | |
| 1667 | fc_private_host_rd_attr(npiv_vports_inuse, "%u\n", 20); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1668 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1669 | /* |
| 1670 | * Host Statistics Management |
| 1671 | */ |
| 1672 | |
| 1673 | /* Show a given an attribute in the statistics group */ |
| 1674 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1675 | fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1677 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 1679 | struct fc_host_statistics *stats; |
| 1680 | ssize_t ret = -ENOENT; |
| 1681 | |
| 1682 | if (offset > sizeof(struct fc_host_statistics) || |
| 1683 | offset % sizeof(u64) != 0) |
| 1684 | WARN_ON(1); |
| 1685 | |
| 1686 | if (i->f->get_fc_host_stats) { |
| 1687 | stats = (i->f->get_fc_host_stats)(shost); |
| 1688 | if (stats) |
| 1689 | ret = snprintf(buf, 20, "0x%llx\n", |
| 1690 | (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); |
| 1691 | } |
| 1692 | return ret; |
| 1693 | } |
| 1694 | |
| 1695 | |
| 1696 | /* generate a read-only statistics attribute */ |
| 1697 | #define fc_host_statistic(name) \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1698 | static ssize_t show_fcstat_##name(struct device *cd, \ |
| 1699 | struct device_attribute *attr, \ |
| 1700 | char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | { \ |
| 1702 | return fc_stat_show(cd, buf, \ |
| 1703 | offsetof(struct fc_host_statistics, name)); \ |
| 1704 | } \ |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1705 | static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | |
| 1707 | fc_host_statistic(seconds_since_last_reset); |
| 1708 | fc_host_statistic(tx_frames); |
| 1709 | fc_host_statistic(tx_words); |
| 1710 | fc_host_statistic(rx_frames); |
| 1711 | fc_host_statistic(rx_words); |
| 1712 | fc_host_statistic(lip_count); |
| 1713 | fc_host_statistic(nos_count); |
| 1714 | fc_host_statistic(error_frames); |
| 1715 | fc_host_statistic(dumped_frames); |
| 1716 | fc_host_statistic(link_failure_count); |
| 1717 | fc_host_statistic(loss_of_sync_count); |
| 1718 | fc_host_statistic(loss_of_signal_count); |
| 1719 | fc_host_statistic(prim_seq_protocol_err_count); |
| 1720 | fc_host_statistic(invalid_tx_word_count); |
| 1721 | fc_host_statistic(invalid_crc_count); |
| 1722 | fc_host_statistic(fcp_input_requests); |
| 1723 | fc_host_statistic(fcp_output_requests); |
| 1724 | fc_host_statistic(fcp_control_requests); |
| 1725 | fc_host_statistic(fcp_input_megabytes); |
| 1726 | fc_host_statistic(fcp_output_megabytes); |
| 1727 | |
| 1728 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1729 | fc_reset_statistics(struct device *dev, struct device_attribute *attr, |
| 1730 | const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1732 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 1734 | |
| 1735 | /* ignore any data value written to the attribute */ |
| 1736 | if (i->f->reset_fc_host_stats) { |
| 1737 | i->f->reset_fc_host_stats(shost); |
| 1738 | return count; |
| 1739 | } |
| 1740 | |
| 1741 | return -ENOENT; |
| 1742 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1743 | static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | fc_reset_statistics); |
| 1745 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | static struct attribute *fc_statistics_attrs[] = { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1747 | &device_attr_host_seconds_since_last_reset.attr, |
| 1748 | &device_attr_host_tx_frames.attr, |
| 1749 | &device_attr_host_tx_words.attr, |
| 1750 | &device_attr_host_rx_frames.attr, |
| 1751 | &device_attr_host_rx_words.attr, |
| 1752 | &device_attr_host_lip_count.attr, |
| 1753 | &device_attr_host_nos_count.attr, |
| 1754 | &device_attr_host_error_frames.attr, |
| 1755 | &device_attr_host_dumped_frames.attr, |
| 1756 | &device_attr_host_link_failure_count.attr, |
| 1757 | &device_attr_host_loss_of_sync_count.attr, |
| 1758 | &device_attr_host_loss_of_signal_count.attr, |
| 1759 | &device_attr_host_prim_seq_protocol_err_count.attr, |
| 1760 | &device_attr_host_invalid_tx_word_count.attr, |
| 1761 | &device_attr_host_invalid_crc_count.attr, |
| 1762 | &device_attr_host_fcp_input_requests.attr, |
| 1763 | &device_attr_host_fcp_output_requests.attr, |
| 1764 | &device_attr_host_fcp_control_requests.attr, |
| 1765 | &device_attr_host_fcp_input_megabytes.attr, |
| 1766 | &device_attr_host_fcp_output_megabytes.attr, |
| 1767 | &device_attr_host_reset_statistics.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | NULL |
| 1769 | }; |
| 1770 | |
| 1771 | static struct attribute_group fc_statistics_group = { |
| 1772 | .name = "statistics", |
| 1773 | .attrs = fc_statistics_attrs, |
| 1774 | }; |
| 1775 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1776 | |
| 1777 | /* Host Vport Attributes */ |
| 1778 | |
| 1779 | static int |
| 1780 | fc_parse_wwn(const char *ns, u64 *nm) |
| 1781 | { |
| 1782 | unsigned int i, j; |
| 1783 | u8 wwn[8]; |
| 1784 | |
| 1785 | memset(wwn, 0, sizeof(wwn)); |
| 1786 | |
| 1787 | /* Validate and store the new name */ |
| 1788 | for (i=0, j=0; i < 16; i++) { |
Andy Shevchenko | ecc3099 | 2010-08-10 18:01:27 -0700 | [diff] [blame] | 1789 | int value; |
| 1790 | |
| 1791 | value = hex_to_bin(*ns++); |
| 1792 | if (value >= 0) |
| 1793 | j = (j << 4) | value; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1794 | else |
| 1795 | return -EINVAL; |
| 1796 | if (i % 2) { |
| 1797 | wwn[i/2] = j & 0xff; |
| 1798 | j = 0; |
| 1799 | } |
| 1800 | } |
| 1801 | |
| 1802 | *nm = wwn_to_u64(wwn); |
| 1803 | |
| 1804 | return 0; |
| 1805 | } |
| 1806 | |
| 1807 | |
| 1808 | /* |
| 1809 | * "Short-cut" sysfs variable to create a new vport on a FC Host. |
| 1810 | * Input is a string of the form "<WWPN>:<WWNN>". Other attributes |
| 1811 | * will default to a NPIV-based FCP_Initiator; The WWNs are specified |
| 1812 | * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc) |
| 1813 | */ |
| 1814 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1815 | store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, |
| 1816 | const char *buf, size_t count) |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1817 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1818 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1819 | struct fc_vport_identifiers vid; |
| 1820 | struct fc_vport *vport; |
| 1821 | unsigned int cnt=count; |
| 1822 | int stat; |
| 1823 | |
| 1824 | memset(&vid, 0, sizeof(vid)); |
| 1825 | |
| 1826 | /* count may include a LF at end of string */ |
| 1827 | if (buf[cnt-1] == '\n') |
| 1828 | cnt--; |
| 1829 | |
| 1830 | /* validate we have enough characters for WWPN */ |
| 1831 | if ((cnt != (16+1+16)) || (buf[16] != ':')) |
| 1832 | return -EINVAL; |
| 1833 | |
| 1834 | stat = fc_parse_wwn(&buf[0], &vid.port_name); |
| 1835 | if (stat) |
| 1836 | return stat; |
| 1837 | |
| 1838 | stat = fc_parse_wwn(&buf[17], &vid.node_name); |
| 1839 | if (stat) |
| 1840 | return stat; |
| 1841 | |
| 1842 | vid.roles = FC_PORT_ROLE_FCP_INITIATOR; |
| 1843 | vid.vport_type = FC_PORTTYPE_NPIV; |
| 1844 | /* vid.symbolic_name is already zero/NULL's */ |
| 1845 | vid.disable = false; /* always enabled */ |
| 1846 | |
| 1847 | /* we only allow support on Channel 0 !!! */ |
Andrew Vasquez | a30c3f6 | 2008-07-18 08:32:52 -0700 | [diff] [blame] | 1848 | stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1849 | return stat ? stat : count; |
| 1850 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1851 | static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1852 | store_fc_host_vport_create); |
| 1853 | |
| 1854 | |
| 1855 | /* |
| 1856 | * "Short-cut" sysfs variable to delete a vport on a FC Host. |
| 1857 | * Vport is identified by a string containing "<WWPN>:<WWNN>". |
| 1858 | * The WWNs are specified as hex characters, and may *not* contain |
| 1859 | * any prefixes (e.g. 0x, x, etc) |
| 1860 | */ |
| 1861 | static ssize_t |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1862 | store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, |
| 1863 | const char *buf, size_t count) |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1864 | { |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1865 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1866 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| 1867 | struct fc_vport *vport; |
| 1868 | u64 wwpn, wwnn; |
| 1869 | unsigned long flags; |
| 1870 | unsigned int cnt=count; |
| 1871 | int stat, match; |
| 1872 | |
| 1873 | /* count may include a LF at end of string */ |
| 1874 | if (buf[cnt-1] == '\n') |
| 1875 | cnt--; |
| 1876 | |
| 1877 | /* validate we have enough characters for WWPN */ |
| 1878 | if ((cnt != (16+1+16)) || (buf[16] != ':')) |
| 1879 | return -EINVAL; |
| 1880 | |
| 1881 | stat = fc_parse_wwn(&buf[0], &wwpn); |
| 1882 | if (stat) |
| 1883 | return stat; |
| 1884 | |
| 1885 | stat = fc_parse_wwn(&buf[17], &wwnn); |
| 1886 | if (stat) |
| 1887 | return stat; |
| 1888 | |
| 1889 | spin_lock_irqsave(shost->host_lock, flags); |
| 1890 | match = 0; |
| 1891 | /* we only allow support on Channel 0 !!! */ |
| 1892 | list_for_each_entry(vport, &fc_host->vports, peers) { |
| 1893 | if ((vport->channel == 0) && |
| 1894 | (vport->port_name == wwpn) && (vport->node_name == wwnn)) { |
Gal Rosen | 0d9dc7c | 2010-01-21 10:15:32 +0200 | [diff] [blame] | 1895 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) |
| 1896 | break; |
| 1897 | vport->flags |= FC_VPORT_DELETING; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1898 | match = 1; |
| 1899 | break; |
| 1900 | } |
| 1901 | } |
| 1902 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1903 | |
| 1904 | if (!match) |
| 1905 | return -ENODEV; |
| 1906 | |
| 1907 | stat = fc_vport_terminate(vport); |
| 1908 | return stat ? stat : count; |
| 1909 | } |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 1910 | static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1911 | store_fc_host_vport_delete); |
| 1912 | |
| 1913 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | static int fc_host_match(struct attribute_container *cont, |
| 1915 | struct device *dev) |
| 1916 | { |
| 1917 | struct Scsi_Host *shost; |
| 1918 | struct fc_internal *i; |
| 1919 | |
| 1920 | if (!scsi_is_host_device(dev)) |
| 1921 | return 0; |
| 1922 | |
| 1923 | shost = dev_to_shost(dev); |
| 1924 | if (!shost->transportt || shost->transportt->host_attrs.ac.class |
| 1925 | != &fc_host_class.class) |
| 1926 | return 0; |
| 1927 | |
| 1928 | i = to_fc_internal(shost->transportt); |
| 1929 | |
| 1930 | return &i->t.host_attrs.ac == cont; |
| 1931 | } |
| 1932 | |
| 1933 | static int fc_target_match(struct attribute_container *cont, |
| 1934 | struct device *dev) |
| 1935 | { |
| 1936 | struct Scsi_Host *shost; |
| 1937 | struct fc_internal *i; |
| 1938 | |
| 1939 | if (!scsi_is_target_device(dev)) |
| 1940 | return 0; |
| 1941 | |
| 1942 | shost = dev_to_shost(dev->parent); |
| 1943 | if (!shost->transportt || shost->transportt->host_attrs.ac.class |
| 1944 | != &fc_host_class.class) |
| 1945 | return 0; |
| 1946 | |
| 1947 | i = to_fc_internal(shost->transportt); |
| 1948 | |
| 1949 | return &i->t.target_attrs.ac == cont; |
| 1950 | } |
| 1951 | |
| 1952 | static void fc_rport_dev_release(struct device *dev) |
| 1953 | { |
| 1954 | struct fc_rport *rport = dev_to_rport(dev); |
| 1955 | put_device(dev->parent); |
| 1956 | kfree(rport); |
| 1957 | } |
| 1958 | |
| 1959 | int scsi_is_fc_rport(const struct device *dev) |
| 1960 | { |
| 1961 | return dev->release == fc_rport_dev_release; |
| 1962 | } |
| 1963 | EXPORT_SYMBOL(scsi_is_fc_rport); |
| 1964 | |
| 1965 | static int fc_rport_match(struct attribute_container *cont, |
| 1966 | struct device *dev) |
| 1967 | { |
| 1968 | struct Scsi_Host *shost; |
| 1969 | struct fc_internal *i; |
| 1970 | |
| 1971 | if (!scsi_is_fc_rport(dev)) |
| 1972 | return 0; |
| 1973 | |
| 1974 | shost = dev_to_shost(dev->parent); |
| 1975 | if (!shost->transportt || shost->transportt->host_attrs.ac.class |
| 1976 | != &fc_host_class.class) |
| 1977 | return 0; |
| 1978 | |
| 1979 | i = to_fc_internal(shost->transportt); |
| 1980 | |
| 1981 | return &i->rport_attr_cont.ac == cont; |
| 1982 | } |
| 1983 | |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 1984 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 1985 | static void fc_vport_dev_release(struct device *dev) |
| 1986 | { |
| 1987 | struct fc_vport *vport = dev_to_vport(dev); |
| 1988 | put_device(dev->parent); /* release kobj parent */ |
| 1989 | kfree(vport); |
| 1990 | } |
| 1991 | |
| 1992 | int scsi_is_fc_vport(const struct device *dev) |
| 1993 | { |
| 1994 | return dev->release == fc_vport_dev_release; |
| 1995 | } |
| 1996 | EXPORT_SYMBOL(scsi_is_fc_vport); |
| 1997 | |
| 1998 | static int fc_vport_match(struct attribute_container *cont, |
| 1999 | struct device *dev) |
| 2000 | { |
| 2001 | struct fc_vport *vport; |
| 2002 | struct Scsi_Host *shost; |
| 2003 | struct fc_internal *i; |
| 2004 | |
| 2005 | if (!scsi_is_fc_vport(dev)) |
| 2006 | return 0; |
| 2007 | vport = dev_to_vport(dev); |
| 2008 | |
| 2009 | shost = vport_to_shost(vport); |
| 2010 | if (!shost->transportt || shost->transportt->host_attrs.ac.class |
| 2011 | != &fc_host_class.class) |
| 2012 | return 0; |
| 2013 | |
| 2014 | i = to_fc_internal(shost->transportt); |
| 2015 | return &i->vport_attr_cont.ac == cont; |
| 2016 | } |
| 2017 | |
| 2018 | |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 2019 | /** |
| 2020 | * fc_timed_out - FC Transport I/O timeout intercept handler |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 2021 | * @scmd: The SCSI command which timed out |
| 2022 | * |
| 2023 | * This routine protects against error handlers getting invoked while a |
| 2024 | * rport is in a blocked state, typically due to a temporarily loss of |
| 2025 | * connectivity. If the error handlers are allowed to proceed, requests |
| 2026 | * to abort i/o, reset the target, etc will likely fail as there is no way |
| 2027 | * to communicate with the device to perform the requested function. These |
| 2028 | * failures may result in the midlayer taking the device offline, requiring |
| 2029 | * manual intervention to restore operation. |
| 2030 | * |
| 2031 | * This routine, called whenever an i/o times out, validates the state of |
| 2032 | * the underlying rport. If the rport is blocked, it returns |
| 2033 | * EH_RESET_TIMER, which will continue to reschedule the timeout. |
| 2034 | * Eventually, either the device will return, or devloss_tmo will fire, |
| 2035 | * and when the timeout then fires, it will be handled normally. |
| 2036 | * If the rport is not blocked, normal error handling continues. |
| 2037 | * |
| 2038 | * Notes: |
| 2039 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2040 | */ |
Jens Axboe | 242f9dc | 2008-09-14 05:55:09 -0700 | [diff] [blame] | 2041 | static enum blk_eh_timer_return |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 2042 | fc_timed_out(struct scsi_cmnd *scmd) |
| 2043 | { |
| 2044 | struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); |
| 2045 | |
| 2046 | if (rport->port_state == FC_PORTSTATE_BLOCKED) |
Jens Axboe | 242f9dc | 2008-09-14 05:55:09 -0700 | [diff] [blame] | 2047 | return BLK_EH_RESET_TIMER; |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 2048 | |
Jens Axboe | 242f9dc | 2008-09-14 05:55:09 -0700 | [diff] [blame] | 2049 | return BLK_EH_NOT_HANDLED; |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 2050 | } |
| 2051 | |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 2052 | /* |
James Smart | bda2325 | 2008-04-24 12:12:46 -0400 | [diff] [blame] | 2053 | * Called by fc_user_scan to locate an rport on the shost that |
| 2054 | * matches the channel and target id, and invoke scsi_scan_target() |
| 2055 | * on the rport. |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 2056 | */ |
James Smart | bda2325 | 2008-04-24 12:12:46 -0400 | [diff] [blame] | 2057 | static void |
| 2058 | fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, uint lun) |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 2059 | { |
| 2060 | struct fc_rport *rport; |
James Smart | bda2325 | 2008-04-24 12:12:46 -0400 | [diff] [blame] | 2061 | unsigned long flags; |
| 2062 | |
| 2063 | spin_lock_irqsave(shost->host_lock, flags); |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 2064 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 2065 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
| 2066 | if (rport->scsi_target_id == -1) |
| 2067 | continue; |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 2068 | |
Hannes Reinecke | 0d2fcd9 | 2007-06-14 15:16:45 +0200 | [diff] [blame] | 2069 | if (rport->port_state != FC_PORTSTATE_ONLINE) |
| 2070 | continue; |
| 2071 | |
James Smart | bda2325 | 2008-04-24 12:12:46 -0400 | [diff] [blame] | 2072 | if ((channel == rport->channel) && |
| 2073 | (id == rport->scsi_target_id)) { |
| 2074 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2075 | scsi_scan_target(&rport->dev, channel, id, lun, 1); |
| 2076 | return; |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 2077 | } |
| 2078 | } |
| 2079 | |
James Smart | bda2325 | 2008-04-24 12:12:46 -0400 | [diff] [blame] | 2080 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2081 | } |
| 2082 | |
| 2083 | /* |
| 2084 | * Called via sysfs scan routines. Necessary, as the FC transport |
| 2085 | * wants to place all target objects below the rport object. So this |
| 2086 | * routine must invoke the scsi_scan_target() routine with the rport |
| 2087 | * object as the parent. |
| 2088 | */ |
| 2089 | static int |
| 2090 | fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, uint lun) |
| 2091 | { |
| 2092 | uint chlo, chhi; |
| 2093 | uint tgtlo, tgthi; |
| 2094 | |
| 2095 | if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) || |
| 2096 | ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) || |
| 2097 | ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun))) |
| 2098 | return -EINVAL; |
| 2099 | |
| 2100 | if (channel == SCAN_WILD_CARD) { |
| 2101 | chlo = 0; |
| 2102 | chhi = shost->max_channel + 1; |
| 2103 | } else { |
| 2104 | chlo = channel; |
| 2105 | chhi = channel + 1; |
| 2106 | } |
| 2107 | |
| 2108 | if (id == SCAN_WILD_CARD) { |
| 2109 | tgtlo = 0; |
| 2110 | tgthi = shost->max_id; |
| 2111 | } else { |
| 2112 | tgtlo = id; |
| 2113 | tgthi = id + 1; |
| 2114 | } |
| 2115 | |
| 2116 | for ( ; chlo < chhi; chlo++) |
| 2117 | for ( ; tgtlo < tgthi; tgtlo++) |
| 2118 | fc_user_scan_tgt(shost, chlo, tgtlo, lun); |
| 2119 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 2120 | return 0; |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 2121 | } |
| 2122 | |
FUJITA Tomonori | 7525236 | 2007-09-01 02:02:27 +0900 | [diff] [blame] | 2123 | static int fc_tsk_mgmt_response(struct Scsi_Host *shost, u64 nexus, u64 tm_id, |
| 2124 | int result) |
| 2125 | { |
| 2126 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 2127 | return i->f->tsk_mgmt_response(shost, nexus, tm_id, result); |
| 2128 | } |
| 2129 | |
| 2130 | static int fc_it_nexus_response(struct Scsi_Host *shost, u64 nexus, int result) |
| 2131 | { |
| 2132 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 2133 | return i->f->it_nexus_response(shost, nexus, result); |
| 2134 | } |
| 2135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2136 | struct scsi_transport_template * |
| 2137 | fc_attach_transport(struct fc_function_template *ft) |
| 2138 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2139 | int count; |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 2140 | struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
| 2141 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2142 | |
| 2143 | if (unlikely(!i)) |
| 2144 | return NULL; |
| 2145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2146 | i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; |
| 2147 | i->t.target_attrs.ac.class = &fc_transport_class.class; |
| 2148 | i->t.target_attrs.ac.match = fc_target_match; |
| 2149 | i->t.target_size = sizeof(struct fc_starget_attrs); |
| 2150 | transport_container_register(&i->t.target_attrs); |
| 2151 | |
| 2152 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; |
| 2153 | i->t.host_attrs.ac.class = &fc_host_class.class; |
| 2154 | i->t.host_attrs.ac.match = fc_host_match; |
| 2155 | i->t.host_size = sizeof(struct fc_host_attrs); |
| 2156 | if (ft->get_fc_host_stats) |
| 2157 | i->t.host_attrs.statistics = &fc_statistics_group; |
| 2158 | transport_container_register(&i->t.host_attrs); |
| 2159 | |
| 2160 | i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; |
| 2161 | i->rport_attr_cont.ac.class = &fc_rport_class.class; |
| 2162 | i->rport_attr_cont.ac.match = fc_rport_match; |
| 2163 | transport_container_register(&i->rport_attr_cont); |
| 2164 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2165 | i->vport_attr_cont.ac.attrs = &i->vport_attrs[0]; |
| 2166 | i->vport_attr_cont.ac.class = &fc_vport_class.class; |
| 2167 | i->vport_attr_cont.ac.match = fc_vport_match; |
| 2168 | transport_container_register(&i->vport_attr_cont); |
| 2169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2170 | i->f = ft; |
| 2171 | |
| 2172 | /* Transport uses the shost workq for scsi scanning */ |
| 2173 | i->t.create_work_queue = 1; |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 2174 | |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 2175 | i->t.eh_timed_out = fc_timed_out; |
| 2176 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 2177 | i->t.user_scan = fc_user_scan; |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 2178 | |
FUJITA Tomonori | 7525236 | 2007-09-01 02:02:27 +0900 | [diff] [blame] | 2179 | /* target-mode drivers' functions */ |
| 2180 | i->t.tsk_mgmt_response = fc_tsk_mgmt_response; |
| 2181 | i->t.it_nexus_response = fc_it_nexus_response; |
| 2182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | /* |
| 2184 | * Setup SCSI Target Attributes. |
| 2185 | */ |
| 2186 | count = 0; |
| 2187 | SETUP_STARGET_ATTRIBUTE_RD(node_name); |
| 2188 | SETUP_STARGET_ATTRIBUTE_RD(port_name); |
| 2189 | SETUP_STARGET_ATTRIBUTE_RD(port_id); |
| 2190 | |
| 2191 | BUG_ON(count > FC_STARGET_NUM_ATTRS); |
| 2192 | |
| 2193 | i->starget_attrs[count] = NULL; |
| 2194 | |
| 2195 | |
| 2196 | /* |
| 2197 | * Setup SCSI Host Attributes. |
| 2198 | */ |
| 2199 | count=0; |
| 2200 | SETUP_HOST_ATTRIBUTE_RD(node_name); |
| 2201 | SETUP_HOST_ATTRIBUTE_RD(port_name); |
Andreas Herrmann | 6b7281d | 2006-01-13 02:16:54 +0100 | [diff] [blame] | 2202 | SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
| 2204 | SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
| 2206 | SETUP_HOST_ATTRIBUTE_RD(maxframe_size); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2207 | if (ft->vport_create) { |
| 2208 | SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); |
| 2209 | SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); |
| 2210 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | SETUP_HOST_ATTRIBUTE_RD(serial_number); |
| 2212 | |
| 2213 | SETUP_HOST_ATTRIBUTE_RD(port_id); |
| 2214 | SETUP_HOST_ATTRIBUTE_RD(port_type); |
| 2215 | SETUP_HOST_ATTRIBUTE_RD(port_state); |
| 2216 | SETUP_HOST_ATTRIBUTE_RD(active_fc4s); |
| 2217 | SETUP_HOST_ATTRIBUTE_RD(speed); |
| 2218 | SETUP_HOST_ATTRIBUTE_RD(fabric_name); |
James Smart | 016131b | 2006-08-14 08:20:25 -0400 | [diff] [blame] | 2219 | SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
James Smart | b8d0821 | 2006-08-17 08:00:43 -0400 | [diff] [blame] | 2220 | SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | |
| 2222 | /* Transport-managed attributes */ |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 2223 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 2225 | if (ft->issue_fc_host_lip) |
| 2226 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2227 | if (ft->vport_create) |
| 2228 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); |
| 2229 | if (ft->vport_delete) |
| 2230 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2231 | |
| 2232 | BUG_ON(count > FC_HOST_NUM_ATTRS); |
| 2233 | |
| 2234 | i->host_attrs[count] = NULL; |
| 2235 | |
| 2236 | /* |
| 2237 | * Setup Remote Port Attributes. |
| 2238 | */ |
| 2239 | count=0; |
| 2240 | SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); |
| 2241 | SETUP_RPORT_ATTRIBUTE_RD(supported_classes); |
| 2242 | SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); |
| 2243 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); |
| 2244 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); |
| 2245 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); |
| 2246 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); |
| 2247 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); |
| 2248 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 2249 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | |
| 2251 | BUG_ON(count > FC_RPORT_NUM_ATTRS); |
| 2252 | |
| 2253 | i->rport_attrs[count] = NULL; |
| 2254 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2255 | /* |
| 2256 | * Setup Virtual Port Attributes. |
| 2257 | */ |
| 2258 | count=0; |
| 2259 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state); |
| 2260 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state); |
| 2261 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name); |
| 2262 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name); |
| 2263 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles); |
| 2264 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type); |
| 2265 | SETUP_VPORT_ATTRIBUTE_RW(symbolic_name); |
| 2266 | SETUP_VPORT_ATTRIBUTE_WR(vport_delete); |
| 2267 | SETUP_VPORT_ATTRIBUTE_WR(vport_disable); |
| 2268 | |
| 2269 | BUG_ON(count > FC_VPORT_NUM_ATTRS); |
| 2270 | |
| 2271 | i->vport_attrs[count] = NULL; |
| 2272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2273 | return &i->t; |
| 2274 | } |
| 2275 | EXPORT_SYMBOL(fc_attach_transport); |
| 2276 | |
| 2277 | void fc_release_transport(struct scsi_transport_template *t) |
| 2278 | { |
| 2279 | struct fc_internal *i = to_fc_internal(t); |
| 2280 | |
| 2281 | transport_container_unregister(&i->t.target_attrs); |
| 2282 | transport_container_unregister(&i->t.host_attrs); |
| 2283 | transport_container_unregister(&i->rport_attr_cont); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2284 | transport_container_unregister(&i->vport_attr_cont); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2285 | |
| 2286 | kfree(i); |
| 2287 | } |
| 2288 | EXPORT_SYMBOL(fc_release_transport); |
| 2289 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2290 | /** |
| 2291 | * fc_queue_work - Queue work to the fc_host workqueue. |
| 2292 | * @shost: Pointer to Scsi_Host bound to fc_host. |
| 2293 | * @work: Work to queue for execution. |
| 2294 | * |
| 2295 | * Return value: |
James Smart | a0785ed | 2006-05-11 13:27:09 -0400 | [diff] [blame] | 2296 | * 1 - work queued for execution |
| 2297 | * 0 - work is already queued |
| 2298 | * -EINVAL - work queue doesn't exist |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2299 | */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2300 | static int |
| 2301 | fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) |
| 2302 | { |
| 2303 | if (unlikely(!fc_host_work_q(shost))) { |
| 2304 | printk(KERN_ERR |
| 2305 | "ERROR: FC host '%s' attempted to queue work, " |
| 2306 | "when no workqueue created.\n", shost->hostt->name); |
| 2307 | dump_stack(); |
| 2308 | |
| 2309 | return -EINVAL; |
| 2310 | } |
| 2311 | |
| 2312 | return queue_work(fc_host_work_q(shost), work); |
| 2313 | } |
| 2314 | |
| 2315 | /** |
| 2316 | * fc_flush_work - Flush a fc_host's workqueue. |
| 2317 | * @shost: Pointer to Scsi_Host bound to fc_host. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2318 | */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2319 | static void |
| 2320 | fc_flush_work(struct Scsi_Host *shost) |
| 2321 | { |
| 2322 | if (!fc_host_work_q(shost)) { |
| 2323 | printk(KERN_ERR |
| 2324 | "ERROR: FC host '%s' attempted to flush work, " |
| 2325 | "when no workqueue created.\n", shost->hostt->name); |
| 2326 | dump_stack(); |
| 2327 | return; |
| 2328 | } |
| 2329 | |
| 2330 | flush_workqueue(fc_host_work_q(shost)); |
| 2331 | } |
| 2332 | |
| 2333 | /** |
| 2334 | * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue. |
| 2335 | * @shost: Pointer to Scsi_Host bound to fc_host. |
| 2336 | * @work: Work to queue for execution. |
| 2337 | * @delay: jiffies to delay the work queuing |
| 2338 | * |
| 2339 | * Return value: |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2340 | * 1 on success / 0 already queued / < 0 for error |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2341 | */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2342 | static int |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2343 | fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2344 | unsigned long delay) |
| 2345 | { |
| 2346 | if (unlikely(!fc_host_devloss_work_q(shost))) { |
| 2347 | printk(KERN_ERR |
| 2348 | "ERROR: FC host '%s' attempted to queue work, " |
| 2349 | "when no workqueue created.\n", shost->hostt->name); |
| 2350 | dump_stack(); |
| 2351 | |
| 2352 | return -EINVAL; |
| 2353 | } |
| 2354 | |
| 2355 | return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay); |
| 2356 | } |
| 2357 | |
| 2358 | /** |
| 2359 | * fc_flush_devloss - Flush a fc_host's devloss workqueue. |
| 2360 | * @shost: Pointer to Scsi_Host bound to fc_host. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2361 | */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2362 | static void |
| 2363 | fc_flush_devloss(struct Scsi_Host *shost) |
| 2364 | { |
| 2365 | if (!fc_host_devloss_work_q(shost)) { |
| 2366 | printk(KERN_ERR |
| 2367 | "ERROR: FC host '%s' attempted to flush work, " |
| 2368 | "when no workqueue created.\n", shost->hostt->name); |
| 2369 | dump_stack(); |
| 2370 | return; |
| 2371 | } |
| 2372 | |
| 2373 | flush_workqueue(fc_host_devloss_work_q(shost)); |
| 2374 | } |
| 2375 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | |
| 2377 | /** |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2378 | * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. |
| 2379 | * @shost: Which &Scsi_Host |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | * |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2381 | * This routine is expected to be called immediately preceding the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | * a driver's call to scsi_remove_host(). |
| 2383 | * |
| 2384 | * WARNING: A driver utilizing the fc_transport, which fails to call |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2385 | * this routine prior to scsi_remove_host(), will leave dangling |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | * objects in /sys/class/fc_remote_ports. Access to any of these |
| 2387 | * objects can result in a system crash !!! |
| 2388 | * |
| 2389 | * Notes: |
| 2390 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2391 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | void |
| 2393 | fc_remove_host(struct Scsi_Host *shost) |
| 2394 | { |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2395 | struct fc_vport *vport = NULL, *next_vport = NULL; |
| 2396 | struct fc_rport *rport = NULL, *next_rport = NULL; |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2397 | struct workqueue_struct *work_q; |
| 2398 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2399 | unsigned long flags; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2400 | |
| 2401 | spin_lock_irqsave(shost->host_lock, flags); |
| 2402 | |
| 2403 | /* Remove any vports */ |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 2404 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) |
| 2405 | fc_queue_work(shost, &vport->vport_delete_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2406 | |
| 2407 | /* Remove any remote ports */ |
| 2408 | list_for_each_entry_safe(rport, next_rport, |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2409 | &fc_host->rports, peers) { |
| 2410 | list_del(&rport->peers); |
| 2411 | rport->port_state = FC_PORTSTATE_DELETED; |
| 2412 | fc_queue_work(shost, &rport->rport_delete_work); |
| 2413 | } |
| 2414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2415 | list_for_each_entry_safe(rport, next_rport, |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2416 | &fc_host->rport_bindings, peers) { |
| 2417 | list_del(&rport->peers); |
| 2418 | rport->port_state = FC_PORTSTATE_DELETED; |
| 2419 | fc_queue_work(shost, &rport->rport_delete_work); |
| 2420 | } |
| 2421 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2422 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2423 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2424 | /* flush all scan work items */ |
| 2425 | scsi_flush_work(shost); |
| 2426 | |
| 2427 | /* flush all stgt delete, and rport delete work items, then kill it */ |
| 2428 | if (fc_host->work_q) { |
| 2429 | work_q = fc_host->work_q; |
| 2430 | fc_host->work_q = NULL; |
| 2431 | destroy_workqueue(work_q); |
| 2432 | } |
| 2433 | |
| 2434 | /* flush all devloss work items, then kill it */ |
| 2435 | if (fc_host->devloss_work_q) { |
| 2436 | work_q = fc_host->devloss_work_q; |
| 2437 | fc_host->devloss_work_q = NULL; |
| 2438 | destroy_workqueue(work_q); |
| 2439 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2440 | } |
| 2441 | EXPORT_SYMBOL(fc_remove_host); |
| 2442 | |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 2443 | static void fc_terminate_rport_io(struct fc_rport *rport) |
| 2444 | { |
| 2445 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 2446 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 2447 | |
| 2448 | /* Involve the LLDD if possible to terminate all io on the rport. */ |
| 2449 | if (i->f->terminate_rport_io) |
| 2450 | i->f->terminate_rport_io(rport); |
| 2451 | |
| 2452 | /* |
| 2453 | * must unblock to flush queued IO. The caller will have set |
| 2454 | * the port_state or flags, so that fc_remote_port_chkready will |
| 2455 | * fail IO. |
| 2456 | */ |
| 2457 | scsi_target_unblock(&rport->dev); |
| 2458 | } |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2459 | |
| 2460 | /** |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2461 | * fc_starget_delete - called to delete the scsi descendants of an rport |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2462 | * @work: remote port to be operated on. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2463 | * |
| 2464 | * Deletes target and all sdevs. |
| 2465 | */ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2466 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2467 | fc_starget_delete(struct work_struct *work) |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2468 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2469 | struct fc_rport *rport = |
| 2470 | container_of(work, struct fc_rport, stgt_delete_work); |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2471 | |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 2472 | fc_terminate_rport_io(rport); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2473 | scsi_remove_target(&rport->dev); |
| 2474 | } |
| 2475 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2476 | |
| 2477 | /** |
| 2478 | * fc_rport_final_delete - finish rport termination and delete it. |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2479 | * @work: remote port to be deleted. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2480 | */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2481 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2482 | fc_rport_final_delete(struct work_struct *work) |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2483 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2484 | struct fc_rport *rport = |
| 2485 | container_of(work, struct fc_rport, rport_delete_work); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2486 | struct device *dev = &rport->dev; |
| 2487 | struct Scsi_Host *shost = rport_to_shost(rport); |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2488 | struct fc_internal *i = to_fc_internal(shost->transportt); |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2489 | unsigned long flags; |
Michael Reed | 8798a69 | 2009-10-09 14:15:59 -0500 | [diff] [blame] | 2490 | int do_callback = 0; |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2491 | |
| 2492 | /* |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 2493 | * if a scan is pending, flush the SCSI Host work_q so that |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2494 | * that we can reclaim the rport scan work element. |
| 2495 | */ |
| 2496 | if (rport->flags & FC_RPORT_SCAN_PENDING) |
| 2497 | scsi_flush_work(shost); |
| 2498 | |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 2499 | fc_terminate_rport_io(rport); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 2500 | |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2501 | /* |
| 2502 | * Cancel any outstanding timers. These should really exist |
| 2503 | * only when rmmod'ing the LLDD and we're asking for |
| 2504 | * immediate termination of the rports |
| 2505 | */ |
| 2506 | spin_lock_irqsave(shost->host_lock, flags); |
| 2507 | if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { |
| 2508 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2509 | if (!cancel_delayed_work(&rport->fail_io_work)) |
| 2510 | fc_flush_devloss(shost); |
| 2511 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
| 2512 | fc_flush_devloss(shost); |
| 2513 | spin_lock_irqsave(shost->host_lock, flags); |
| 2514 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
| 2515 | } |
| 2516 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2517 | |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2518 | /* Delete SCSI target and sdevs */ |
| 2519 | if (rport->scsi_target_id != -1) |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2520 | fc_starget_delete(&rport->stgt_delete_work); |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2521 | |
| 2522 | /* |
| 2523 | * Notify the driver that the rport is now dead. The LLDD will |
| 2524 | * also guarantee that any communication to the rport is terminated |
James Smart | 4be98c0 | 2009-01-05 12:14:18 -0500 | [diff] [blame] | 2525 | * |
| 2526 | * Avoid this call if we already called it when we preserved the |
| 2527 | * rport for the binding. |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2528 | */ |
Michael Reed | 8798a69 | 2009-10-09 14:15:59 -0500 | [diff] [blame] | 2529 | spin_lock_irqsave(shost->host_lock, flags); |
James Smart | 4be98c0 | 2009-01-05 12:14:18 -0500 | [diff] [blame] | 2530 | if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) && |
Michael Reed | 8798a69 | 2009-10-09 14:15:59 -0500 | [diff] [blame] | 2531 | (i->f->dev_loss_tmo_callbk)) { |
| 2532 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; |
| 2533 | do_callback = 1; |
| 2534 | } |
| 2535 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2536 | |
| 2537 | if (do_callback) |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2538 | i->f->dev_loss_tmo_callbk(rport); |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2539 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 2540 | fc_bsg_remove(rport->rqst_q); |
| 2541 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2542 | transport_remove_device(dev); |
| 2543 | device_del(dev); |
| 2544 | transport_destroy_device(dev); |
James Smart | 3bdad7b | 2006-06-26 14:19:59 -0400 | [diff] [blame] | 2545 | put_device(&shost->shost_gendev); /* for fc_host->rport list */ |
| 2546 | put_device(dev); /* for self-reference */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2547 | } |
| 2548 | |
| 2549 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | /** |
| 2551 | * fc_rport_create - allocates and creates a remote FC port. |
| 2552 | * @shost: scsi host the remote port is connected to. |
| 2553 | * @channel: Channel on shost port connected to. |
| 2554 | * @ids: The world wide names, fc address, and FC4 port |
| 2555 | * roles for the remote port. |
| 2556 | * |
| 2557 | * Allocates and creates the remoter port structure, including the |
| 2558 | * class and sysfs creation. |
| 2559 | * |
| 2560 | * Notes: |
| 2561 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2562 | */ |
Adrian Bunk | 44818ef | 2007-07-09 11:59:59 -0700 | [diff] [blame] | 2563 | static struct fc_rport * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2564 | fc_rport_create(struct Scsi_Host *shost, int channel, |
| 2565 | struct fc_rport_identifiers *ids) |
| 2566 | { |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2567 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
| 2569 | struct fc_rport *rport; |
| 2570 | struct device *dev; |
| 2571 | unsigned long flags; |
| 2572 | int error; |
| 2573 | size_t size; |
| 2574 | |
| 2575 | size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 2576 | rport = kzalloc(size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2577 | if (unlikely(!rport)) { |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 2578 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | return NULL; |
| 2580 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2581 | |
| 2582 | rport->maxframe_size = -1; |
| 2583 | rport->supported_classes = FC_COS_UNSPECIFIED; |
Mike Christie | 43ca910 | 2010-09-15 16:52:32 -0500 | [diff] [blame] | 2584 | rport->dev_loss_tmo = fc_host->dev_loss_tmo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2585 | memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); |
| 2586 | memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); |
| 2587 | rport->port_id = ids->port_id; |
| 2588 | rport->roles = ids->roles; |
| 2589 | rport->port_state = FC_PORTSTATE_ONLINE; |
| 2590 | if (fci->f->dd_fcrport_size) |
| 2591 | rport->dd_data = &rport[1]; |
| 2592 | rport->channel = channel; |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2593 | rport->fast_io_fail_tmo = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2594 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2595 | INIT_DELAYED_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport); |
| 2596 | INIT_DELAYED_WORK(&rport->fail_io_work, fc_timeout_fail_rport_io); |
| 2597 | INIT_WORK(&rport->scan_work, fc_scsi_scan_rport); |
| 2598 | INIT_WORK(&rport->stgt_delete_work, fc_starget_delete); |
| 2599 | INIT_WORK(&rport->rport_delete_work, fc_rport_final_delete); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2600 | |
| 2601 | spin_lock_irqsave(shost->host_lock, flags); |
| 2602 | |
| 2603 | rport->number = fc_host->next_rport_number++; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2604 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2605 | rport->scsi_target_id = fc_host->next_target_id++; |
| 2606 | else |
| 2607 | rport->scsi_target_id = -1; |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2608 | list_add_tail(&rport->peers, &fc_host->rports); |
James Smart | 3bdad7b | 2006-06-26 14:19:59 -0400 | [diff] [blame] | 2609 | get_device(&shost->shost_gendev); /* for fc_host->rport list */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2610 | |
| 2611 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2612 | |
| 2613 | dev = &rport->dev; |
James Smart | 3bdad7b | 2006-06-26 14:19:59 -0400 | [diff] [blame] | 2614 | device_initialize(dev); /* takes self reference */ |
| 2615 | dev->parent = get_device(&shost->shost_gendev); /* parent reference */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2616 | dev->release = fc_rport_dev_release; |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 2617 | dev_set_name(dev, "rport-%d:%d-%d", |
| 2618 | shost->host_no, channel, rport->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2619 | transport_setup_device(dev); |
| 2620 | |
| 2621 | error = device_add(dev); |
| 2622 | if (error) { |
| 2623 | printk(KERN_ERR "FC Remote Port device_add failed\n"); |
| 2624 | goto delete_rport; |
| 2625 | } |
| 2626 | transport_add_device(dev); |
| 2627 | transport_configure_device(dev); |
| 2628 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 2629 | fc_bsg_rportadd(shost, rport); |
| 2630 | /* ignore any bsg add error - we just can't do sgio */ |
| 2631 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2632 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2633 | /* initiate a scan of the target */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2634 | rport->flags |= FC_RPORT_SCAN_PENDING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2635 | scsi_queue_work(shost, &rport->scan_work); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2636 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2637 | |
| 2638 | return rport; |
| 2639 | |
| 2640 | delete_rport: |
| 2641 | transport_destroy_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2642 | spin_lock_irqsave(shost->host_lock, flags); |
| 2643 | list_del(&rport->peers); |
James Smart | 3bdad7b | 2006-06-26 14:19:59 -0400 | [diff] [blame] | 2644 | put_device(&shost->shost_gendev); /* for fc_host->rport list */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2646 | put_device(dev->parent); |
| 2647 | kfree(rport); |
| 2648 | return NULL; |
| 2649 | } |
| 2650 | |
| 2651 | /** |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2652 | * fc_remote_port_add - notify fc transport of the existence of a remote FC port. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2653 | * @shost: scsi host the remote port is connected to. |
| 2654 | * @channel: Channel on shost port connected to. |
| 2655 | * @ids: The world wide names, fc address, and FC4 port |
| 2656 | * roles for the remote port. |
| 2657 | * |
| 2658 | * The LLDD calls this routine to notify the transport of the existence |
| 2659 | * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) |
| 2660 | * of the port, it's FC address (port_id), and the FC4 roles that are |
| 2661 | * active for the port. |
| 2662 | * |
| 2663 | * For ports that are FCP targets (aka scsi targets), the FC transport |
| 2664 | * maintains consistent target id bindings on behalf of the LLDD. |
| 2665 | * A consistent target id binding is an assignment of a target id to |
| 2666 | * a remote port identifier, which persists while the scsi host is |
| 2667 | * attached. The remote port can disappear, then later reappear, and |
| 2668 | * it's target id assignment remains the same. This allows for shifts |
| 2669 | * in FC addressing (if binding by wwpn or wwnn) with no apparent |
| 2670 | * changes to the scsi subsystem which is based on scsi host number and |
| 2671 | * target id values. Bindings are only valid during the attachment of |
| 2672 | * the scsi host. If the host detaches, then later re-attaches, target |
| 2673 | * id bindings may change. |
| 2674 | * |
| 2675 | * This routine is responsible for returning a remote port structure. |
| 2676 | * The routine will search the list of remote ports it maintains |
| 2677 | * internally on behalf of consistent target id mappings. If found, the |
| 2678 | * remote port structure will be reused. Otherwise, a new remote port |
| 2679 | * structure will be allocated. |
| 2680 | * |
| 2681 | * Whenever a remote port is allocated, a new fc_remote_port class |
| 2682 | * device is created. |
| 2683 | * |
| 2684 | * Should not be called from interrupt context. |
| 2685 | * |
| 2686 | * Notes: |
| 2687 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2688 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2689 | struct fc_rport * |
| 2690 | fc_remote_port_add(struct Scsi_Host *shost, int channel, |
| 2691 | struct fc_rport_identifiers *ids) |
| 2692 | { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2693 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2694 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2695 | struct fc_rport *rport; |
| 2696 | unsigned long flags; |
| 2697 | int match = 0; |
| 2698 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2699 | /* ensure any stgt delete functions are done */ |
| 2700 | fc_flush_work(shost); |
| 2701 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2702 | /* |
| 2703 | * Search the list of "active" rports, for an rport that has been |
| 2704 | * deleted, but we've held off the real delete while the target |
| 2705 | * is in a "blocked" state. |
| 2706 | */ |
| 2707 | spin_lock_irqsave(shost->host_lock, flags); |
| 2708 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2709 | list_for_each_entry(rport, &fc_host->rports, peers) { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2710 | |
| 2711 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) && |
| 2712 | (rport->channel == channel)) { |
| 2713 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2714 | switch (fc_host->tgtid_bind_type) { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2715 | case FC_TGTID_BIND_BY_WWPN: |
| 2716 | case FC_TGTID_BIND_NONE: |
| 2717 | if (rport->port_name == ids->port_name) |
| 2718 | match = 1; |
| 2719 | break; |
| 2720 | case FC_TGTID_BIND_BY_WWNN: |
| 2721 | if (rport->node_name == ids->node_name) |
| 2722 | match = 1; |
| 2723 | break; |
| 2724 | case FC_TGTID_BIND_BY_ID: |
| 2725 | if (rport->port_id == ids->port_id) |
| 2726 | match = 1; |
| 2727 | break; |
| 2728 | } |
| 2729 | |
| 2730 | if (match) { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2731 | |
| 2732 | memcpy(&rport->node_name, &ids->node_name, |
| 2733 | sizeof(rport->node_name)); |
| 2734 | memcpy(&rport->port_name, &ids->port_name, |
| 2735 | sizeof(rport->port_name)); |
| 2736 | rport->port_id = ids->port_id; |
| 2737 | |
| 2738 | rport->port_state = FC_PORTSTATE_ONLINE; |
| 2739 | rport->roles = ids->roles; |
| 2740 | |
| 2741 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2742 | |
| 2743 | if (fci->f->dd_fcrport_size) |
| 2744 | memset(rport->dd_data, 0, |
| 2745 | fci->f->dd_fcrport_size); |
| 2746 | |
| 2747 | /* |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2748 | * If we were not a target, cancel the |
| 2749 | * io terminate and rport timers, and |
| 2750 | * we're done. |
| 2751 | * |
| 2752 | * If we were a target, but our new role |
| 2753 | * doesn't indicate a target, leave the |
| 2754 | * timers running expecting the role to |
| 2755 | * change as the target fully logs in. If |
| 2756 | * it doesn't, the target will be torn down. |
| 2757 | * |
| 2758 | * If we were a target, and our role shows |
| 2759 | * we're still a target, cancel the timers |
| 2760 | * and kick off a scan. |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2761 | */ |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2762 | |
| 2763 | /* was a target, not in roles */ |
| 2764 | if ((rport->scsi_target_id != -1) && |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2765 | (!(ids->roles & FC_PORT_ROLE_FCP_TARGET))) |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2766 | return rport; |
| 2767 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2768 | /* |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2769 | * Stop the fail io and dev_loss timers. |
| 2770 | * If they flush, the port_state will |
| 2771 | * be checked and will NOOP the function. |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2772 | */ |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2773 | if (!cancel_delayed_work(&rport->fail_io_work)) |
| 2774 | fc_flush_devloss(shost); |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2775 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2776 | fc_flush_devloss(shost); |
| 2777 | |
| 2778 | spin_lock_irqsave(shost->host_lock, flags); |
| 2779 | |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 2780 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
James Smart | 4be98c0 | 2009-01-05 12:14:18 -0500 | [diff] [blame] | 2781 | FC_RPORT_DEVLOSS_PENDING | |
| 2782 | FC_RPORT_DEVLOSS_CALLBK_DONE); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2783 | |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2784 | /* if target, initiate a scan */ |
| 2785 | if (rport->scsi_target_id != -1) { |
| 2786 | rport->flags |= FC_RPORT_SCAN_PENDING; |
| 2787 | scsi_queue_work(shost, |
| 2788 | &rport->scan_work); |
| 2789 | spin_unlock_irqrestore(shost->host_lock, |
| 2790 | flags); |
| 2791 | scsi_target_unblock(&rport->dev); |
| 2792 | } else |
| 2793 | spin_unlock_irqrestore(shost->host_lock, |
| 2794 | flags); |
James Smart | a0785ed | 2006-05-11 13:27:09 -0400 | [diff] [blame] | 2795 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 2796 | fc_bsg_goose_queue(rport); |
| 2797 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2798 | return rport; |
| 2799 | } |
| 2800 | } |
| 2801 | } |
| 2802 | |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2803 | /* |
| 2804 | * Search the bindings array |
| 2805 | * Note: if never a FCP target, you won't be on this list |
| 2806 | */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2807 | if (fc_host->tgtid_bind_type != FC_TGTID_BIND_NONE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2808 | |
| 2809 | /* search for a matching consistent binding */ |
| 2810 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2811 | list_for_each_entry(rport, &fc_host->rport_bindings, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2812 | peers) { |
| 2813 | if (rport->channel != channel) |
| 2814 | continue; |
| 2815 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2816 | switch (fc_host->tgtid_bind_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2817 | case FC_TGTID_BIND_BY_WWPN: |
| 2818 | if (rport->port_name == ids->port_name) |
| 2819 | match = 1; |
| 2820 | break; |
| 2821 | case FC_TGTID_BIND_BY_WWNN: |
| 2822 | if (rport->node_name == ids->node_name) |
| 2823 | match = 1; |
| 2824 | break; |
| 2825 | case FC_TGTID_BIND_BY_ID: |
| 2826 | if (rport->port_id == ids->port_id) |
| 2827 | match = 1; |
| 2828 | break; |
| 2829 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ |
| 2830 | break; |
| 2831 | } |
| 2832 | |
| 2833 | if (match) { |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2834 | list_move_tail(&rport->peers, &fc_host->rports); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2835 | break; |
| 2836 | } |
| 2837 | } |
| 2838 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2839 | if (match) { |
| 2840 | memcpy(&rport->node_name, &ids->node_name, |
| 2841 | sizeof(rport->node_name)); |
| 2842 | memcpy(&rport->port_name, &ids->port_name, |
| 2843 | sizeof(rport->port_name)); |
| 2844 | rport->port_id = ids->port_id; |
| 2845 | rport->roles = ids->roles; |
| 2846 | rport->port_state = FC_PORTSTATE_ONLINE; |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 2847 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2848 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2849 | if (fci->f->dd_fcrport_size) |
| 2850 | memset(rport->dd_data, 0, |
| 2851 | fci->f->dd_fcrport_size); |
| 2852 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 2853 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2854 | /* initiate a scan of the target */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2855 | rport->flags |= FC_RPORT_SCAN_PENDING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2856 | scsi_queue_work(shost, &rport->scan_work); |
James Smart | a0785ed | 2006-05-11 13:27:09 -0400 | [diff] [blame] | 2857 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2858 | scsi_target_unblock(&rport->dev); |
| 2859 | } else |
| 2860 | spin_unlock_irqrestore(shost->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2861 | |
| 2862 | return rport; |
| 2863 | } |
| 2864 | } |
| 2865 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2866 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2867 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2868 | /* No consistent binding found - create new remote port entry */ |
| 2869 | rport = fc_rport_create(shost, channel, ids); |
| 2870 | |
| 2871 | return rport; |
| 2872 | } |
| 2873 | EXPORT_SYMBOL(fc_remote_port_add); |
| 2874 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2875 | |
| 2876 | /** |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2877 | * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | * @rport: The remote port that no longer exists |
| 2879 | * |
| 2880 | * The LLDD calls this routine to notify the transport that a remote |
| 2881 | * port is no longer part of the topology. Note: Although a port |
| 2882 | * 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] | 2883 | * ports displayed by the fc_host. We do this under 2 conditions: |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2884 | * 1) If the port was a scsi target, we delay its deletion by "blocking" it. |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2885 | * This allows the port to temporarily disappear, then reappear without |
| 2886 | * disrupting the SCSI device tree attached to it. During the "blocked" |
| 2887 | * period the port will still exist. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2888 | * 2) If the port was a scsi target and disappears for longer than we |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2889 | * expect, we'll delete the port and the tear down the SCSI device tree |
| 2890 | * attached to it. However, we want to semi-persist the target id assigned |
| 2891 | * to that port if it eventually does exist. The port structure will |
| 2892 | * remain (although with minimal information) so that the target id |
| 2893 | * bindings remails. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2894 | * |
| 2895 | * If the remote port is not an FCP Target, it will be fully torn down |
| 2896 | * and deallocated, including the fc_remote_port class device. |
| 2897 | * |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2898 | * If the remote port is an FCP Target, the port will be placed in a |
| 2899 | * temporary blocked state. From the LLDD's perspective, the rport no |
| 2900 | * longer exists. From the SCSI midlayer's perspective, the SCSI target |
| 2901 | * exists, but all sdevs on it are blocked from further I/O. The following |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2902 | * is then expected. |
| 2903 | * |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2904 | * If the remote port does not return (signaled by a LLDD call to |
| 2905 | * fc_remote_port_add()) within the dev_loss_tmo timeout, then the |
| 2906 | * scsi target is removed - killing all outstanding i/o and removing the |
| 2907 | * scsi devices attached ot it. The port structure will be marked Not |
| 2908 | * Present and be partially cleared, leaving only enough information to |
| 2909 | * recognize the remote port relative to the scsi target id binding if |
| 2910 | * it later appears. The port will remain as long as there is a valid |
| 2911 | * binding (e.g. until the user changes the binding type or unloads the |
| 2912 | * scsi host with the binding). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | * |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2914 | * If the remote port returns within the dev_loss_tmo value (and matches |
| 2915 | * according to the target id binding type), the port structure will be |
| 2916 | * reused. If it is no longer a SCSI target, the target will be torn |
| 2917 | * down. If it continues to be a SCSI target, then the target will be |
| 2918 | * unblocked (allowing i/o to be resumed), and a scan will be activated |
| 2919 | * to ensure that all luns are detected. |
| 2920 | * |
| 2921 | * Called from normal process context only - cannot be called from interrupt. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2922 | * |
| 2923 | * Notes: |
| 2924 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2925 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2926 | void |
| 2927 | fc_remote_port_delete(struct fc_rport *rport) |
| 2928 | { |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2929 | struct Scsi_Host *shost = rport_to_shost(rport); |
Hannes Reinecke | 36dd288 | 2010-03-09 10:18:48 +0100 | [diff] [blame] | 2930 | unsigned long timeout = rport->dev_loss_tmo; |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2931 | unsigned long flags; |
| 2932 | |
| 2933 | /* |
| 2934 | * No need to flush the fc_host work_q's, as all adds are synchronous. |
| 2935 | * |
| 2936 | * We do need to reclaim the rport scan work element, so eventually |
| 2937 | * (in fc_rport_final_delete()) we'll flush the scsi host work_q if |
| 2938 | * there's still a scan pending. |
| 2939 | */ |
| 2940 | |
| 2941 | spin_lock_irqsave(shost->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2942 | |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2943 | if (rport->port_state != FC_PORTSTATE_ONLINE) { |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2944 | spin_unlock_irqrestore(shost->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2945 | return; |
| 2946 | } |
| 2947 | |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 2948 | /* |
| 2949 | * In the past, we if this was not an FCP-Target, we would |
| 2950 | * unconditionally just jump to deleting the rport. |
| 2951 | * However, rports can be used as node containers by the LLDD, |
| 2952 | * and its not appropriate to just terminate the rport at the |
| 2953 | * first sign of a loss in connectivity. The LLDD may want to |
| 2954 | * send ELS traffic to re-validate the login. If the rport is |
| 2955 | * immediately deleted, it makes it inappropriate for a node |
| 2956 | * container. |
| 2957 | * So... we now unconditionally wait dev_loss_tmo before |
| 2958 | * destroying an rport. |
| 2959 | */ |
| 2960 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2961 | rport->port_state = FC_PORTSTATE_BLOCKED; |
| 2962 | |
| 2963 | rport->flags |= FC_RPORT_DEVLOSS_PENDING; |
| 2964 | |
| 2965 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 2966 | |
FUJITA Tomonori | 7525236 | 2007-09-01 02:02:27 +0900 | [diff] [blame] | 2967 | if (rport->roles & FC_PORT_ROLE_FCP_INITIATOR && |
| 2968 | shost->active_mode & MODE_TARGET) |
| 2969 | fc_tgt_it_nexus_destroy(shost, (unsigned long)rport); |
| 2970 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2971 | scsi_target_block(&rport->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2972 | |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2973 | /* see if we need to kill io faster than waiting for device loss */ |
| 2974 | if ((rport->fast_io_fail_tmo != -1) && |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 2975 | (rport->fast_io_fail_tmo < timeout)) |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 2976 | fc_queue_devloss_work(shost, &rport->fail_io_work, |
| 2977 | rport->fast_io_fail_tmo * HZ); |
| 2978 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 2979 | /* cap the length the devices can be blocked until they are deleted */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 2980 | fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2981 | } |
| 2982 | EXPORT_SYMBOL(fc_remote_port_delete); |
| 2983 | |
| 2984 | /** |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2985 | * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2986 | * @rport: The remote port that changed. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2987 | * @roles: New roles for this port. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2988 | * |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 2989 | * Description: The LLDD calls this routine to notify the transport that the |
| 2990 | * roles on a remote port may have changed. The largest effect of this is |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2991 | * if a port now becomes a FCP Target, it must be allocated a |
| 2992 | * scsi target id. If the port is no longer a FCP target, any |
| 2993 | * scsi target id value assigned to it will persist in case the |
| 2994 | * role changes back to include FCP Target. No changes in the scsi |
| 2995 | * midlayer will be invoked if the role changes (in the expectation |
| 2996 | * that the role will be resumed. If it doesn't normal error processing |
| 2997 | * will take place). |
| 2998 | * |
| 2999 | * Should not be called from interrupt context. |
| 3000 | * |
| 3001 | * Notes: |
| 3002 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3003 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3004 | void |
| 3005 | fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) |
| 3006 | { |
| 3007 | struct Scsi_Host *shost = rport_to_shost(rport); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3008 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3009 | unsigned long flags; |
| 3010 | int create = 0; |
FUJITA Tomonori | 7525236 | 2007-09-01 02:02:27 +0900 | [diff] [blame] | 3011 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3012 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3013 | spin_lock_irqsave(shost->host_lock, flags); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3014 | if (roles & FC_PORT_ROLE_FCP_TARGET) { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3015 | if (rport->scsi_target_id == -1) { |
| 3016 | rport->scsi_target_id = fc_host->next_target_id++; |
| 3017 | create = 1; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3018 | } else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3019 | create = 1; |
FUJITA Tomonori | 7525236 | 2007-09-01 02:02:27 +0900 | [diff] [blame] | 3020 | } else if (shost->active_mode & MODE_TARGET) { |
| 3021 | ret = fc_tgt_it_nexus_create(shost, (unsigned long)rport, |
| 3022 | (char *)&rport->node_name); |
| 3023 | if (ret) |
| 3024 | printk(KERN_ERR "FC Remore Port tgt nexus failed %d\n", |
| 3025 | ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3027 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3028 | rport->roles = roles; |
| 3029 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3030 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3031 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3032 | if (create) { |
| 3033 | /* |
| 3034 | * There may have been a delete timer running on the |
| 3035 | * port. Ensure that it is cancelled as we now know |
| 3036 | * the port is an FCP Target. |
| 3037 | * Note: we know the rport is exists and in an online |
| 3038 | * state as the LLDD would not have had an rport |
| 3039 | * reference to pass us. |
| 3040 | * |
| 3041 | * Take no action on the del_timer failure as the state |
| 3042 | * machine state change will validate the |
| 3043 | * transaction. |
| 3044 | */ |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 3045 | if (!cancel_delayed_work(&rport->fail_io_work)) |
| 3046 | fc_flush_devloss(shost); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3047 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3048 | fc_flush_devloss(shost); |
| 3049 | |
| 3050 | spin_lock_irqsave(shost->host_lock, flags); |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 3051 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
| 3052 | FC_RPORT_DEVLOSS_PENDING); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3053 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3054 | |
| 3055 | /* ensure any stgt delete functions are done */ |
| 3056 | fc_flush_work(shost); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3057 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3058 | /* initiate a scan of the target */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3059 | spin_lock_irqsave(shost->host_lock, flags); |
| 3060 | rport->flags |= FC_RPORT_SCAN_PENDING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3061 | scsi_queue_work(shost, &rport->scan_work); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3062 | spin_unlock_irqrestore(shost->host_lock, flags); |
James Smart | a0785ed | 2006-05-11 13:27:09 -0400 | [diff] [blame] | 3063 | scsi_target_unblock(&rport->dev); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3064 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3065 | } |
| 3066 | EXPORT_SYMBOL(fc_remote_port_rolechg); |
| 3067 | |
| 3068 | /** |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3069 | * fc_timeout_deleted_rport - Timeout handler for a deleted remote port. |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 3070 | * @work: rport target that failed to reappear in the allotted time. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3071 | * |
| 3072 | * Description: An attempt to delete a remote port blocks, and if it fails |
| 3073 | * to return in the allotted time this gets called. |
| 3074 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3075 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3076 | fc_timeout_deleted_rport(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3077 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3078 | struct fc_rport *rport = |
| 3079 | container_of(work, struct fc_rport, dev_loss_work.work); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3080 | struct Scsi_Host *shost = rport_to_shost(rport); |
James Smart | 4be98c0 | 2009-01-05 12:14:18 -0500 | [diff] [blame] | 3081 | struct fc_internal *i = to_fc_internal(shost->transportt); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3082 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3083 | unsigned long flags; |
Michael Reed | 8798a69 | 2009-10-09 14:15:59 -0500 | [diff] [blame] | 3084 | int do_callback = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3085 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3086 | spin_lock_irqsave(shost->host_lock, flags); |
| 3087 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3088 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
| 3089 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3090 | /* |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 3091 | * If the port is ONLINE, then it came back. If it was a SCSI |
| 3092 | * target, validate it still is. If not, tear down the |
| 3093 | * scsi_target on it. |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3094 | */ |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3095 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 3096 | (rport->scsi_target_id != -1) && |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3097 | !(rport->roles & FC_PORT_ROLE_FCP_TARGET)) { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3098 | dev_printk(KERN_ERR, &rport->dev, |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3099 | "blocked FC remote port time out: no longer" |
| 3100 | " a FCP target, removing starget\n"); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3101 | spin_unlock_irqrestore(shost->host_lock, flags); |
James Smart | a0785ed | 2006-05-11 13:27:09 -0400 | [diff] [blame] | 3102 | scsi_target_unblock(&rport->dev); |
| 3103 | fc_queue_work(shost, &rport->stgt_delete_work); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3104 | return; |
| 3105 | } |
| 3106 | |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 3107 | /* NOOP state - we're flushing workq's */ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3108 | if (rport->port_state != FC_PORTSTATE_BLOCKED) { |
| 3109 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3110 | dev_printk(KERN_ERR, &rport->dev, |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 3111 | "blocked FC remote port time out: leaving" |
| 3112 | " rport%s alone\n", |
| 3113 | (rport->scsi_target_id != -1) ? " and starget" : ""); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3114 | return; |
| 3115 | } |
| 3116 | |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 3117 | if ((fc_host->tgtid_bind_type == FC_TGTID_BIND_NONE) || |
| 3118 | (rport->scsi_target_id == -1)) { |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3119 | list_del(&rport->peers); |
| 3120 | rport->port_state = FC_PORTSTATE_DELETED; |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3121 | dev_printk(KERN_ERR, &rport->dev, |
James Smart | 92740b2 | 2007-04-27 11:53:17 -0400 | [diff] [blame] | 3122 | "blocked FC remote port time out: removing" |
| 3123 | " rport%s\n", |
| 3124 | (rport->scsi_target_id != -1) ? " and starget" : ""); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3125 | fc_queue_work(shost, &rport->rport_delete_work); |
| 3126 | spin_unlock_irqrestore(shost->host_lock, flags); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3127 | return; |
| 3128 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3129 | |
| 3130 | dev_printk(KERN_ERR, &rport->dev, |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3131 | "blocked FC remote port time out: removing target and " |
| 3132 | "saving binding\n"); |
| 3133 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3134 | list_move_tail(&rport->peers, &fc_host->rport_bindings); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3135 | |
| 3136 | /* |
| 3137 | * Note: We do not remove or clear the hostdata area. This allows |
| 3138 | * host-specific target data to persist along with the |
| 3139 | * scsi_target_id. It's up to the host to manage it's hostdata area. |
| 3140 | */ |
| 3141 | |
| 3142 | /* |
| 3143 | * Reinitialize port attributes that may change if the port comes back. |
| 3144 | */ |
| 3145 | rport->maxframe_size = -1; |
| 3146 | rport->supported_classes = FC_COS_UNSPECIFIED; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3147 | rport->roles = FC_PORT_ROLE_UNKNOWN; |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3148 | rport->port_state = FC_PORTSTATE_NOTPRESENT; |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 3149 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3150 | |
James Smart | f78badb | 2008-12-05 16:29:59 -0600 | [diff] [blame] | 3151 | /* |
| 3152 | * Pre-emptively kill I/O rather than waiting for the work queue |
| 3153 | * item to teardown the starget. (FCOE libFC folks prefer this |
| 3154 | * and to have the rport_port_id still set when it's done). |
| 3155 | */ |
| 3156 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3157 | fc_terminate_rport_io(rport); |
| 3158 | |
Michael Reed | 8798a69 | 2009-10-09 14:15:59 -0500 | [diff] [blame] | 3159 | spin_lock_irqsave(shost->host_lock, flags); |
James Smart | f78badb | 2008-12-05 16:29:59 -0600 | [diff] [blame] | 3160 | |
Michael Reed | 8798a69 | 2009-10-09 14:15:59 -0500 | [diff] [blame] | 3161 | if (rport->port_state == FC_PORTSTATE_NOTPRESENT) { /* still missing */ |
| 3162 | |
| 3163 | /* remove the identifiers that aren't used in the consisting binding */ |
| 3164 | switch (fc_host->tgtid_bind_type) { |
| 3165 | case FC_TGTID_BIND_BY_WWPN: |
| 3166 | rport->node_name = -1; |
| 3167 | rport->port_id = -1; |
| 3168 | break; |
| 3169 | case FC_TGTID_BIND_BY_WWNN: |
| 3170 | rport->port_name = -1; |
| 3171 | rport->port_id = -1; |
| 3172 | break; |
| 3173 | case FC_TGTID_BIND_BY_ID: |
| 3174 | rport->node_name = -1; |
| 3175 | rport->port_name = -1; |
| 3176 | break; |
| 3177 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ |
| 3178 | break; |
| 3179 | } |
| 3180 | |
| 3181 | /* |
| 3182 | * As this only occurs if the remote port (scsi target) |
| 3183 | * went away and didn't come back - we'll remove |
| 3184 | * all attached scsi devices. |
| 3185 | */ |
| 3186 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; |
| 3187 | fc_queue_work(shost, &rport->stgt_delete_work); |
| 3188 | |
| 3189 | do_callback = 1; |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 3190 | } |
| 3191 | |
Michael Reed | 8798a69 | 2009-10-09 14:15:59 -0500 | [diff] [blame] | 3192 | spin_unlock_irqrestore(shost->host_lock, flags); |
James Smart | 4be98c0 | 2009-01-05 12:14:18 -0500 | [diff] [blame] | 3193 | |
| 3194 | /* |
| 3195 | * Notify the driver that the rport is now dead. The LLDD will |
| 3196 | * also guarantee that any communication to the rport is terminated |
| 3197 | * |
| 3198 | * Note: we set the CALLBK_DONE flag above to correspond |
| 3199 | */ |
Michael Reed | 8798a69 | 2009-10-09 14:15:59 -0500 | [diff] [blame] | 3200 | if (do_callback && i->f->dev_loss_tmo_callbk) |
James Smart | 4be98c0 | 2009-01-05 12:14:18 -0500 | [diff] [blame] | 3201 | i->f->dev_loss_tmo_callbk(rport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3202 | } |
| 3203 | |
James Smart | 4be98c0 | 2009-01-05 12:14:18 -0500 | [diff] [blame] | 3204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3205 | /** |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3206 | * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3207 | * @work: rport to terminate io on. |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 3208 | * |
| 3209 | * Notes: Only requests the failure of the io, not that all are flushed |
| 3210 | * prior to returning. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3211 | */ |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 3212 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3213 | fc_timeout_fail_rport_io(struct work_struct *work) |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 3214 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3215 | struct fc_rport *rport = |
| 3216 | container_of(work, struct fc_rport, fail_io_work.work); |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 3217 | |
| 3218 | if (rport->port_state != FC_PORTSTATE_BLOCKED) |
| 3219 | return; |
| 3220 | |
Mike Christie | fff9d40 | 2008-08-19 18:45:23 -0500 | [diff] [blame] | 3221 | rport->flags |= FC_RPORT_FAST_FAIL_TIMEDOUT; |
| 3222 | fc_terminate_rport_io(rport); |
James Smart | 0f29b96 | 2006-08-18 17:33:29 -0400 | [diff] [blame] | 3223 | } |
| 3224 | |
| 3225 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3226 | * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3227 | * @work: remote port to be scanned. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3228 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3229 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3230 | fc_scsi_scan_rport(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3231 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 3232 | struct fc_rport *rport = |
| 3233 | container_of(work, struct fc_rport, scan_work); |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3234 | struct Scsi_Host *shost = rport_to_shost(rport); |
Christof Schmitt | 03f002f | 2007-08-28 09:31:21 +0200 | [diff] [blame] | 3235 | struct fc_internal *i = to_fc_internal(shost->transportt); |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 3236 | unsigned long flags; |
| 3237 | |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3238 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
Christof Schmitt | 03f002f | 2007-08-28 09:31:21 +0200 | [diff] [blame] | 3239 | (rport->roles & FC_PORT_ROLE_FCP_TARGET) && |
| 3240 | !(i->f->disable_target_scan)) { |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3241 | scsi_scan_target(&rport->dev, rport->channel, |
| 3242 | rport->scsi_target_id, SCAN_WILD_CARD, 1); |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 3243 | } |
James Smart | aedf349 | 2006-04-10 10:14:05 -0400 | [diff] [blame] | 3244 | |
| 3245 | spin_lock_irqsave(shost->host_lock, flags); |
| 3246 | rport->flags &= ~FC_RPORT_SCAN_PENDING; |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 3247 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3248 | } |
| 3249 | |
Christof Schmitt | 65d430f | 2009-10-30 17:59:29 +0100 | [diff] [blame] | 3250 | /** |
| 3251 | * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport |
| 3252 | * @cmnd: SCSI command that scsi_eh is trying to recover |
| 3253 | * |
| 3254 | * This routine can be called from a FC LLD scsi_eh callback. It |
| 3255 | * blocks the scsi_eh thread until the fc_rport leaves the |
Christof Schmitt | 2f2eb58 | 2010-03-24 16:50:30 +0100 | [diff] [blame] | 3256 | * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is |
| 3257 | * necessary to avoid the scsi_eh failing recovery actions for blocked |
| 3258 | * rports which would lead to offlined SCSI devices. |
| 3259 | * |
| 3260 | * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. |
| 3261 | * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be |
| 3262 | * passed back to scsi_eh. |
Christof Schmitt | 65d430f | 2009-10-30 17:59:29 +0100 | [diff] [blame] | 3263 | */ |
Christof Schmitt | 2f2eb58 | 2010-03-24 16:50:30 +0100 | [diff] [blame] | 3264 | int fc_block_scsi_eh(struct scsi_cmnd *cmnd) |
Christof Schmitt | 65d430f | 2009-10-30 17:59:29 +0100 | [diff] [blame] | 3265 | { |
| 3266 | struct Scsi_Host *shost = cmnd->device->host; |
| 3267 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
| 3268 | unsigned long flags; |
| 3269 | |
| 3270 | spin_lock_irqsave(shost->host_lock, flags); |
Christof Schmitt | 2f2eb58 | 2010-03-24 16:50:30 +0100 | [diff] [blame] | 3271 | while (rport->port_state == FC_PORTSTATE_BLOCKED && |
| 3272 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) { |
Christof Schmitt | 65d430f | 2009-10-30 17:59:29 +0100 | [diff] [blame] | 3273 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3274 | msleep(1000); |
| 3275 | spin_lock_irqsave(shost->host_lock, flags); |
| 3276 | } |
| 3277 | spin_unlock_irqrestore(shost->host_lock, flags); |
Christof Schmitt | 2f2eb58 | 2010-03-24 16:50:30 +0100 | [diff] [blame] | 3278 | |
| 3279 | if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT) |
| 3280 | return FAST_IO_FAIL; |
| 3281 | |
| 3282 | return 0; |
Christof Schmitt | 65d430f | 2009-10-30 17:59:29 +0100 | [diff] [blame] | 3283 | } |
| 3284 | EXPORT_SYMBOL(fc_block_scsi_eh); |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 3285 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3286 | /** |
Andrew Vasquez | a30c3f6 | 2008-07-18 08:32:52 -0700 | [diff] [blame] | 3287 | * fc_vport_setup - allocates and creates a FC virtual port. |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3288 | * @shost: scsi host the virtual port is connected to. |
| 3289 | * @channel: Channel on shost port connected to. |
| 3290 | * @pdev: parent device for vport |
| 3291 | * @ids: The world wide names, FC4 port roles, etc for |
| 3292 | * the virtual port. |
| 3293 | * @ret_vport: The pointer to the created vport. |
| 3294 | * |
| 3295 | * Allocates and creates the vport structure, calls the parent host |
| 3296 | * to instantiate the vport, the completes w/ class and sysfs creation. |
| 3297 | * |
| 3298 | * Notes: |
| 3299 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3300 | */ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3301 | static int |
Andrew Vasquez | a30c3f6 | 2008-07-18 08:32:52 -0700 | [diff] [blame] | 3302 | fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev, |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3303 | struct fc_vport_identifiers *ids, struct fc_vport **ret_vport) |
| 3304 | { |
| 3305 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| 3306 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
| 3307 | struct fc_vport *vport; |
| 3308 | struct device *dev; |
| 3309 | unsigned long flags; |
| 3310 | size_t size; |
| 3311 | int error; |
| 3312 | |
| 3313 | *ret_vport = NULL; |
| 3314 | |
| 3315 | if ( ! fci->f->vport_create) |
| 3316 | return -ENOENT; |
| 3317 | |
| 3318 | size = (sizeof(struct fc_vport) + fci->f->dd_fcvport_size); |
| 3319 | vport = kzalloc(size, GFP_KERNEL); |
| 3320 | if (unlikely(!vport)) { |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3321 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3322 | return -ENOMEM; |
| 3323 | } |
| 3324 | |
| 3325 | vport->vport_state = FC_VPORT_UNKNOWN; |
| 3326 | vport->vport_last_state = FC_VPORT_UNKNOWN; |
| 3327 | vport->node_name = ids->node_name; |
| 3328 | vport->port_name = ids->port_name; |
| 3329 | vport->roles = ids->roles; |
| 3330 | vport->vport_type = ids->vport_type; |
| 3331 | if (fci->f->dd_fcvport_size) |
| 3332 | vport->dd_data = &vport[1]; |
| 3333 | vport->shost = shost; |
| 3334 | vport->channel = channel; |
| 3335 | vport->flags = FC_VPORT_CREATING; |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 3336 | INIT_WORK(&vport->vport_delete_work, fc_vport_sched_delete); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3337 | |
| 3338 | spin_lock_irqsave(shost->host_lock, flags); |
| 3339 | |
| 3340 | if (fc_host->npiv_vports_inuse >= fc_host->max_npiv_vports) { |
| 3341 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3342 | kfree(vport); |
| 3343 | return -ENOSPC; |
| 3344 | } |
| 3345 | fc_host->npiv_vports_inuse++; |
| 3346 | vport->number = fc_host->next_vport_number++; |
| 3347 | list_add_tail(&vport->peers, &fc_host->vports); |
| 3348 | get_device(&shost->shost_gendev); /* for fc_host->vport list */ |
| 3349 | |
| 3350 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3351 | |
| 3352 | dev = &vport->dev; |
| 3353 | device_initialize(dev); /* takes self reference */ |
| 3354 | dev->parent = get_device(pdev); /* takes parent reference */ |
| 3355 | dev->release = fc_vport_dev_release; |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3356 | dev_set_name(dev, "vport-%d:%d-%d", |
| 3357 | shost->host_no, channel, vport->number); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3358 | transport_setup_device(dev); |
| 3359 | |
| 3360 | error = device_add(dev); |
| 3361 | if (error) { |
| 3362 | printk(KERN_ERR "FC Virtual Port device_add failed\n"); |
| 3363 | goto delete_vport; |
| 3364 | } |
| 3365 | transport_add_device(dev); |
| 3366 | transport_configure_device(dev); |
| 3367 | |
| 3368 | error = fci->f->vport_create(vport, ids->disable); |
| 3369 | if (error) { |
| 3370 | printk(KERN_ERR "FC Virtual Port LLDD Create failed\n"); |
| 3371 | goto delete_vport_all; |
| 3372 | } |
| 3373 | |
| 3374 | /* |
| 3375 | * if the parent isn't the physical adapter's Scsi_Host, ensure |
| 3376 | * the Scsi_Host at least contains ia symlink to the vport. |
| 3377 | */ |
| 3378 | if (pdev != &shost->shost_gendev) { |
| 3379 | error = sysfs_create_link(&shost->shost_gendev.kobj, |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3380 | &dev->kobj, dev_name(dev)); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3381 | if (error) |
| 3382 | printk(KERN_ERR |
| 3383 | "%s: Cannot create vport symlinks for " |
| 3384 | "%s, err=%d\n", |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3385 | __func__, dev_name(dev), error); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3386 | } |
| 3387 | spin_lock_irqsave(shost->host_lock, flags); |
| 3388 | vport->flags &= ~FC_VPORT_CREATING; |
| 3389 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3390 | |
| 3391 | dev_printk(KERN_NOTICE, pdev, |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3392 | "%s created via shost%d channel %d\n", dev_name(dev), |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3393 | shost->host_no, channel); |
| 3394 | |
| 3395 | *ret_vport = vport; |
| 3396 | |
| 3397 | return 0; |
| 3398 | |
| 3399 | delete_vport_all: |
| 3400 | transport_remove_device(dev); |
| 3401 | device_del(dev); |
| 3402 | delete_vport: |
| 3403 | transport_destroy_device(dev); |
| 3404 | spin_lock_irqsave(shost->host_lock, flags); |
| 3405 | list_del(&vport->peers); |
| 3406 | put_device(&shost->shost_gendev); /* for fc_host->vport list */ |
| 3407 | fc_host->npiv_vports_inuse--; |
| 3408 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3409 | put_device(dev->parent); |
| 3410 | kfree(vport); |
| 3411 | |
| 3412 | return error; |
| 3413 | } |
| 3414 | |
Andrew Vasquez | a30c3f6 | 2008-07-18 08:32:52 -0700 | [diff] [blame] | 3415 | /** |
| 3416 | * fc_vport_create - Admin App or LLDD requests creation of a vport |
| 3417 | * @shost: scsi host the virtual port is connected to. |
| 3418 | * @channel: channel on shost port connected to. |
| 3419 | * @ids: The world wide names, FC4 port roles, etc for |
| 3420 | * the virtual port. |
| 3421 | * |
| 3422 | * Notes: |
| 3423 | * This routine assumes no locks are held on entry. |
| 3424 | */ |
| 3425 | struct fc_vport * |
| 3426 | fc_vport_create(struct Scsi_Host *shost, int channel, |
| 3427 | struct fc_vport_identifiers *ids) |
| 3428 | { |
| 3429 | int stat; |
| 3430 | struct fc_vport *vport; |
| 3431 | |
| 3432 | stat = fc_vport_setup(shost, channel, &shost->shost_gendev, |
| 3433 | ids, &vport); |
| 3434 | return stat ? NULL : vport; |
| 3435 | } |
| 3436 | EXPORT_SYMBOL(fc_vport_create); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3437 | |
| 3438 | /** |
| 3439 | * fc_vport_terminate - Admin App or LLDD requests termination of a vport |
| 3440 | * @vport: fc_vport to be terminated |
| 3441 | * |
| 3442 | * Calls the LLDD vport_delete() function, then deallocates and removes |
| 3443 | * the vport from the shost and object tree. |
| 3444 | * |
| 3445 | * Notes: |
| 3446 | * This routine assumes no locks are held on entry. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3447 | */ |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3448 | int |
| 3449 | fc_vport_terminate(struct fc_vport *vport) |
| 3450 | { |
| 3451 | struct Scsi_Host *shost = vport_to_shost(vport); |
| 3452 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| 3453 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 3454 | struct device *dev = &vport->dev; |
| 3455 | unsigned long flags; |
| 3456 | int stat; |
| 3457 | |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3458 | if (i->f->vport_delete) |
| 3459 | stat = i->f->vport_delete(vport); |
| 3460 | else |
| 3461 | stat = -ENOENT; |
| 3462 | |
| 3463 | spin_lock_irqsave(shost->host_lock, flags); |
| 3464 | vport->flags &= ~FC_VPORT_DELETING; |
| 3465 | if (!stat) { |
| 3466 | vport->flags |= FC_VPORT_DELETED; |
| 3467 | list_del(&vport->peers); |
| 3468 | fc_host->npiv_vports_inuse--; |
| 3469 | put_device(&shost->shost_gendev); /* for fc_host->vport list */ |
| 3470 | } |
| 3471 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 3472 | |
| 3473 | if (stat) |
| 3474 | return stat; |
| 3475 | |
| 3476 | if (dev->parent != &shost->shost_gendev) |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3477 | sysfs_remove_link(&shost->shost_gendev.kobj, dev_name(dev)); |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3478 | transport_remove_device(dev); |
| 3479 | device_del(dev); |
| 3480 | transport_destroy_device(dev); |
| 3481 | |
| 3482 | /* |
| 3483 | * Removing our self-reference should mean our |
| 3484 | * release function gets called, which will drop the remaining |
| 3485 | * parent reference and free the data structure. |
| 3486 | */ |
| 3487 | put_device(dev); /* for self-reference */ |
| 3488 | |
| 3489 | return 0; /* SUCCESS */ |
| 3490 | } |
| 3491 | EXPORT_SYMBOL(fc_vport_terminate); |
| 3492 | |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 3493 | /** |
| 3494 | * fc_vport_sched_delete - workq-based delete request for a vport |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 3495 | * @work: vport to be deleted. |
Rob Landley | eb44820 | 2007-11-03 13:30:39 -0500 | [diff] [blame] | 3496 | */ |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 3497 | static void |
| 3498 | fc_vport_sched_delete(struct work_struct *work) |
| 3499 | { |
| 3500 | struct fc_vport *vport = |
| 3501 | container_of(work, struct fc_vport, vport_delete_work); |
| 3502 | int stat; |
James Smart | a53eb5e | 2007-04-27 12:41:09 -0400 | [diff] [blame] | 3503 | |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 3504 | stat = fc_vport_terminate(vport); |
| 3505 | if (stat) |
| 3506 | dev_printk(KERN_ERR, vport->dev.parent, |
| 3507 | "%s: %s could not be deleted created via " |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3508 | "shost%d channel %d - error %d\n", __func__, |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3509 | dev_name(&vport->dev), vport->shost->host_no, |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 3510 | vport->channel, stat); |
| 3511 | } |
| 3512 | |
| 3513 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3514 | /* |
| 3515 | * BSG support |
| 3516 | */ |
| 3517 | |
| 3518 | |
| 3519 | /** |
| 3520 | * fc_destroy_bsgjob - routine to teardown/delete a fc bsg job |
| 3521 | * @job: fc_bsg_job that is to be torn down |
| 3522 | */ |
| 3523 | static void |
| 3524 | fc_destroy_bsgjob(struct fc_bsg_job *job) |
| 3525 | { |
| 3526 | unsigned long flags; |
| 3527 | |
| 3528 | spin_lock_irqsave(&job->job_lock, flags); |
| 3529 | if (job->ref_cnt) { |
| 3530 | spin_unlock_irqrestore(&job->job_lock, flags); |
| 3531 | return; |
| 3532 | } |
| 3533 | spin_unlock_irqrestore(&job->job_lock, flags); |
| 3534 | |
| 3535 | put_device(job->dev); /* release reference for the request */ |
| 3536 | |
| 3537 | kfree(job->request_payload.sg_list); |
| 3538 | kfree(job->reply_payload.sg_list); |
| 3539 | kfree(job); |
| 3540 | } |
| 3541 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3542 | /** |
| 3543 | * fc_bsg_jobdone - completion routine for bsg requests that the LLD has |
| 3544 | * completed |
| 3545 | * @job: fc_bsg_job that is complete |
| 3546 | */ |
| 3547 | static void |
| 3548 | fc_bsg_jobdone(struct fc_bsg_job *job) |
| 3549 | { |
| 3550 | struct request *req = job->req; |
| 3551 | struct request *rsp = req->next_rq; |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3552 | int err; |
| 3553 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3554 | err = job->req->errors = job->reply->result; |
Giridhar Malavali | b5c6f77 | 2009-06-19 16:26:53 -0700 | [diff] [blame] | 3555 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3556 | if (err < 0) |
| 3557 | /* we're only returning the result field in the reply */ |
| 3558 | job->req->sense_len = sizeof(uint32_t); |
| 3559 | else |
| 3560 | job->req->sense_len = job->reply_len; |
| 3561 | |
| 3562 | /* we assume all request payload was transferred, residual == 0 */ |
| 3563 | req->resid_len = 0; |
| 3564 | |
| 3565 | if (rsp) { |
| 3566 | WARN_ON(job->reply->reply_payload_rcv_len > rsp->resid_len); |
| 3567 | |
| 3568 | /* set reply (bidi) residual */ |
| 3569 | rsp->resid_len -= min(job->reply->reply_payload_rcv_len, |
| 3570 | rsp->resid_len); |
| 3571 | } |
Giridhar Malavali | b5c6f77 | 2009-06-19 16:26:53 -0700 | [diff] [blame] | 3572 | blk_complete_request(req); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3573 | } |
| 3574 | |
Giridhar Malavali | b5c6f77 | 2009-06-19 16:26:53 -0700 | [diff] [blame] | 3575 | /** |
| 3576 | * fc_bsg_softirq_done - softirq done routine for destroying the bsg requests |
Randy Dunlap | fe5d20c | 2009-07-04 13:10:41 -0700 | [diff] [blame] | 3577 | * @rq: BSG request that holds the job to be destroyed |
Giridhar Malavali | b5c6f77 | 2009-06-19 16:26:53 -0700 | [diff] [blame] | 3578 | */ |
| 3579 | static void fc_bsg_softirq_done(struct request *rq) |
| 3580 | { |
| 3581 | struct fc_bsg_job *job = rq->special; |
| 3582 | unsigned long flags; |
| 3583 | |
| 3584 | spin_lock_irqsave(&job->job_lock, flags); |
| 3585 | job->state_flags |= FC_RQST_STATE_DONE; |
| 3586 | job->ref_cnt--; |
| 3587 | spin_unlock_irqrestore(&job->job_lock, flags); |
| 3588 | |
| 3589 | blk_end_request_all(rq, rq->errors); |
| 3590 | fc_destroy_bsgjob(job); |
| 3591 | } |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3592 | |
| 3593 | /** |
| 3594 | * fc_bsg_job_timeout - handler for when a bsg request timesout |
| 3595 | * @req: request that timed out |
| 3596 | */ |
| 3597 | static enum blk_eh_timer_return |
| 3598 | fc_bsg_job_timeout(struct request *req) |
| 3599 | { |
| 3600 | struct fc_bsg_job *job = (void *) req->special; |
| 3601 | struct Scsi_Host *shost = job->shost; |
| 3602 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 3603 | unsigned long flags; |
| 3604 | int err = 0, done = 0; |
| 3605 | |
| 3606 | if (job->rport && job->rport->port_state == FC_PORTSTATE_BLOCKED) |
| 3607 | return BLK_EH_RESET_TIMER; |
| 3608 | |
| 3609 | spin_lock_irqsave(&job->job_lock, flags); |
| 3610 | if (job->state_flags & FC_RQST_STATE_DONE) |
| 3611 | done = 1; |
| 3612 | else |
| 3613 | job->ref_cnt++; |
| 3614 | spin_unlock_irqrestore(&job->job_lock, flags); |
| 3615 | |
| 3616 | if (!done && i->f->bsg_timeout) { |
| 3617 | /* call LLDD to abort the i/o as it has timed out */ |
| 3618 | err = i->f->bsg_timeout(job); |
Swen Schillig | b8f0864 | 2010-01-14 17:19:00 +0100 | [diff] [blame] | 3619 | if (err == -EAGAIN) { |
| 3620 | job->ref_cnt--; |
| 3621 | return BLK_EH_RESET_TIMER; |
| 3622 | } else if (err) |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3623 | printk(KERN_ERR "ERROR: FC BSG request timeout - LLD " |
| 3624 | "abort failed with status %d\n", err); |
| 3625 | } |
| 3626 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3627 | /* the blk_end_sync_io() doesn't check the error */ |
Giridhar Malavali | 47e7e89 | 2009-06-19 16:26:54 -0700 | [diff] [blame] | 3628 | if (done) |
| 3629 | return BLK_EH_NOT_HANDLED; |
| 3630 | else |
| 3631 | return BLK_EH_HANDLED; |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3632 | } |
| 3633 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3634 | static int |
| 3635 | fc_bsg_map_buffer(struct fc_bsg_buffer *buf, struct request *req) |
| 3636 | { |
| 3637 | size_t sz = (sizeof(struct scatterlist) * req->nr_phys_segments); |
| 3638 | |
| 3639 | BUG_ON(!req->nr_phys_segments); |
| 3640 | |
| 3641 | buf->sg_list = kzalloc(sz, GFP_KERNEL); |
| 3642 | if (!buf->sg_list) |
| 3643 | return -ENOMEM; |
| 3644 | sg_init_table(buf->sg_list, req->nr_phys_segments); |
| 3645 | buf->sg_cnt = blk_rq_map_sg(req->q, req, buf->sg_list); |
| 3646 | buf->payload_len = blk_rq_bytes(req); |
| 3647 | return 0; |
| 3648 | } |
| 3649 | |
| 3650 | |
| 3651 | /** |
| 3652 | * fc_req_to_bsgjob - Allocate/create the fc_bsg_job structure for the |
| 3653 | * bsg request |
| 3654 | * @shost: SCSI Host corresponding to the bsg object |
| 3655 | * @rport: (optional) FC Remote Port corresponding to the bsg object |
| 3656 | * @req: BSG request that needs a job structure |
| 3657 | */ |
| 3658 | static int |
| 3659 | fc_req_to_bsgjob(struct Scsi_Host *shost, struct fc_rport *rport, |
| 3660 | struct request *req) |
| 3661 | { |
| 3662 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 3663 | struct request *rsp = req->next_rq; |
| 3664 | struct fc_bsg_job *job; |
| 3665 | int ret; |
| 3666 | |
| 3667 | BUG_ON(req->special); |
| 3668 | |
| 3669 | job = kzalloc(sizeof(struct fc_bsg_job) + i->f->dd_bsg_size, |
| 3670 | GFP_KERNEL); |
| 3671 | if (!job) |
| 3672 | return -ENOMEM; |
| 3673 | |
| 3674 | /* |
| 3675 | * Note: this is a bit silly. |
| 3676 | * The request gets formatted as a SGIO v4 ioctl request, which |
| 3677 | * then gets reformatted as a blk request, which then gets |
| 3678 | * reformatted as a fc bsg request. And on completion, we have |
| 3679 | * to wrap return results such that SGIO v4 thinks it was a scsi |
| 3680 | * status. I hope this was all worth it. |
| 3681 | */ |
| 3682 | |
| 3683 | req->special = job; |
| 3684 | job->shost = shost; |
| 3685 | job->rport = rport; |
| 3686 | job->req = req; |
| 3687 | if (i->f->dd_bsg_size) |
| 3688 | job->dd_data = (void *)&job[1]; |
| 3689 | spin_lock_init(&job->job_lock); |
| 3690 | job->request = (struct fc_bsg_request *)req->cmd; |
| 3691 | job->request_len = req->cmd_len; |
| 3692 | job->reply = req->sense; |
| 3693 | job->reply_len = SCSI_SENSE_BUFFERSIZE; /* Size of sense buffer |
| 3694 | * allocated */ |
| 3695 | if (req->bio) { |
| 3696 | ret = fc_bsg_map_buffer(&job->request_payload, req); |
| 3697 | if (ret) |
| 3698 | goto failjob_rls_job; |
| 3699 | } |
| 3700 | if (rsp && rsp->bio) { |
| 3701 | ret = fc_bsg_map_buffer(&job->reply_payload, rsp); |
| 3702 | if (ret) |
| 3703 | goto failjob_rls_rqst_payload; |
| 3704 | } |
| 3705 | job->job_done = fc_bsg_jobdone; |
| 3706 | if (rport) |
| 3707 | job->dev = &rport->dev; |
| 3708 | else |
| 3709 | job->dev = &shost->shost_gendev; |
| 3710 | get_device(job->dev); /* take a reference for the request */ |
| 3711 | |
| 3712 | job->ref_cnt = 1; |
| 3713 | |
| 3714 | return 0; |
| 3715 | |
| 3716 | |
| 3717 | failjob_rls_rqst_payload: |
| 3718 | kfree(job->request_payload.sg_list); |
| 3719 | failjob_rls_job: |
| 3720 | kfree(job); |
| 3721 | return -ENOMEM; |
| 3722 | } |
| 3723 | |
| 3724 | |
| 3725 | enum fc_dispatch_result { |
| 3726 | FC_DISPATCH_BREAK, /* on return, q is locked, break from q loop */ |
| 3727 | FC_DISPATCH_LOCKED, /* on return, q is locked, continue on */ |
| 3728 | FC_DISPATCH_UNLOCKED, /* on return, q is unlocked, continue on */ |
| 3729 | }; |
| 3730 | |
| 3731 | |
| 3732 | /** |
| 3733 | * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD |
Randy Dunlap | 5415907 | 2009-06-18 19:39:57 -0700 | [diff] [blame] | 3734 | * @q: fc host request queue |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3735 | * @shost: scsi host rport attached to |
| 3736 | * @job: bsg job to be processed |
| 3737 | */ |
| 3738 | static enum fc_dispatch_result |
| 3739 | fc_bsg_host_dispatch(struct request_queue *q, struct Scsi_Host *shost, |
| 3740 | struct fc_bsg_job *job) |
| 3741 | { |
| 3742 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 3743 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
| 3744 | int ret; |
| 3745 | |
| 3746 | /* Validate the host command */ |
| 3747 | switch (job->request->msgcode) { |
| 3748 | case FC_BSG_HST_ADD_RPORT: |
| 3749 | cmdlen += sizeof(struct fc_bsg_host_add_rport); |
| 3750 | break; |
| 3751 | |
| 3752 | case FC_BSG_HST_DEL_RPORT: |
| 3753 | cmdlen += sizeof(struct fc_bsg_host_del_rport); |
| 3754 | break; |
| 3755 | |
| 3756 | case FC_BSG_HST_ELS_NOLOGIN: |
| 3757 | cmdlen += sizeof(struct fc_bsg_host_els); |
| 3758 | /* there better be a xmt and rcv payloads */ |
| 3759 | if ((!job->request_payload.payload_len) || |
| 3760 | (!job->reply_payload.payload_len)) { |
| 3761 | ret = -EINVAL; |
| 3762 | goto fail_host_msg; |
| 3763 | } |
| 3764 | break; |
| 3765 | |
| 3766 | case FC_BSG_HST_CT: |
| 3767 | cmdlen += sizeof(struct fc_bsg_host_ct); |
| 3768 | /* there better be xmt and rcv payloads */ |
| 3769 | if ((!job->request_payload.payload_len) || |
| 3770 | (!job->reply_payload.payload_len)) { |
| 3771 | ret = -EINVAL; |
| 3772 | goto fail_host_msg; |
| 3773 | } |
| 3774 | break; |
| 3775 | |
| 3776 | case FC_BSG_HST_VENDOR: |
| 3777 | cmdlen += sizeof(struct fc_bsg_host_vendor); |
| 3778 | if ((shost->hostt->vendor_id == 0L) || |
| 3779 | (job->request->rqst_data.h_vendor.vendor_id != |
| 3780 | shost->hostt->vendor_id)) { |
| 3781 | ret = -ESRCH; |
| 3782 | goto fail_host_msg; |
| 3783 | } |
| 3784 | break; |
| 3785 | |
| 3786 | default: |
| 3787 | ret = -EBADR; |
| 3788 | goto fail_host_msg; |
| 3789 | } |
| 3790 | |
| 3791 | /* check if we really have all the request data needed */ |
| 3792 | if (job->request_len < cmdlen) { |
| 3793 | ret = -ENOMSG; |
| 3794 | goto fail_host_msg; |
| 3795 | } |
| 3796 | |
| 3797 | ret = i->f->bsg_request(job); |
| 3798 | if (!ret) |
| 3799 | return FC_DISPATCH_UNLOCKED; |
| 3800 | |
| 3801 | fail_host_msg: |
| 3802 | /* return the errno failure code as the only status */ |
| 3803 | BUG_ON(job->reply_len < sizeof(uint32_t)); |
Brian King | 61ec33e | 2009-10-19 10:53:36 -0500 | [diff] [blame] | 3804 | job->reply->reply_payload_rcv_len = 0; |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3805 | job->reply->result = ret; |
| 3806 | job->reply_len = sizeof(uint32_t); |
| 3807 | fc_bsg_jobdone(job); |
| 3808 | return FC_DISPATCH_UNLOCKED; |
| 3809 | } |
| 3810 | |
| 3811 | |
| 3812 | /* |
| 3813 | * fc_bsg_goose_queue - restart rport queue in case it was stopped |
| 3814 | * @rport: rport to be restarted |
| 3815 | */ |
| 3816 | static void |
| 3817 | fc_bsg_goose_queue(struct fc_rport *rport) |
| 3818 | { |
| 3819 | int flagset; |
Christof Schmitt | 39562e7 | 2009-06-26 16:30:43 +0200 | [diff] [blame] | 3820 | unsigned long flags; |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3821 | |
| 3822 | if (!rport->rqst_q) |
| 3823 | return; |
| 3824 | |
| 3825 | get_device(&rport->dev); |
| 3826 | |
Christof Schmitt | 39562e7 | 2009-06-26 16:30:43 +0200 | [diff] [blame] | 3827 | spin_lock_irqsave(rport->rqst_q->queue_lock, flags); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3828 | flagset = test_bit(QUEUE_FLAG_REENTER, &rport->rqst_q->queue_flags) && |
| 3829 | !test_bit(QUEUE_FLAG_REENTER, &rport->rqst_q->queue_flags); |
| 3830 | if (flagset) |
| 3831 | queue_flag_set(QUEUE_FLAG_REENTER, rport->rqst_q); |
Tejun Heo | 1654e74 | 2011-03-02 08:48:05 -0500 | [diff] [blame] | 3832 | __blk_run_queue(rport->rqst_q, false); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3833 | if (flagset) |
| 3834 | queue_flag_clear(QUEUE_FLAG_REENTER, rport->rqst_q); |
Christof Schmitt | 39562e7 | 2009-06-26 16:30:43 +0200 | [diff] [blame] | 3835 | spin_unlock_irqrestore(rport->rqst_q->queue_lock, flags); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3836 | |
| 3837 | put_device(&rport->dev); |
| 3838 | } |
| 3839 | |
| 3840 | |
| 3841 | /** |
| 3842 | * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD |
Randy Dunlap | 5415907 | 2009-06-18 19:39:57 -0700 | [diff] [blame] | 3843 | * @q: rport request queue |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3844 | * @shost: scsi host rport attached to |
| 3845 | * @rport: rport request destined to |
| 3846 | * @job: bsg job to be processed |
| 3847 | */ |
| 3848 | static enum fc_dispatch_result |
| 3849 | fc_bsg_rport_dispatch(struct request_queue *q, struct Scsi_Host *shost, |
| 3850 | struct fc_rport *rport, struct fc_bsg_job *job) |
| 3851 | { |
| 3852 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 3853 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
| 3854 | int ret; |
| 3855 | |
| 3856 | /* Validate the rport command */ |
| 3857 | switch (job->request->msgcode) { |
| 3858 | case FC_BSG_RPT_ELS: |
| 3859 | cmdlen += sizeof(struct fc_bsg_rport_els); |
| 3860 | goto check_bidi; |
| 3861 | |
| 3862 | case FC_BSG_RPT_CT: |
| 3863 | cmdlen += sizeof(struct fc_bsg_rport_ct); |
| 3864 | check_bidi: |
| 3865 | /* there better be xmt and rcv payloads */ |
| 3866 | if ((!job->request_payload.payload_len) || |
| 3867 | (!job->reply_payload.payload_len)) { |
| 3868 | ret = -EINVAL; |
| 3869 | goto fail_rport_msg; |
| 3870 | } |
| 3871 | break; |
| 3872 | default: |
| 3873 | ret = -EBADR; |
| 3874 | goto fail_rport_msg; |
| 3875 | } |
| 3876 | |
| 3877 | /* check if we really have all the request data needed */ |
| 3878 | if (job->request_len < cmdlen) { |
| 3879 | ret = -ENOMSG; |
| 3880 | goto fail_rport_msg; |
| 3881 | } |
| 3882 | |
| 3883 | ret = i->f->bsg_request(job); |
| 3884 | if (!ret) |
| 3885 | return FC_DISPATCH_UNLOCKED; |
| 3886 | |
| 3887 | fail_rport_msg: |
| 3888 | /* return the errno failure code as the only status */ |
| 3889 | BUG_ON(job->reply_len < sizeof(uint32_t)); |
Brian King | 61ec33e | 2009-10-19 10:53:36 -0500 | [diff] [blame] | 3890 | job->reply->reply_payload_rcv_len = 0; |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3891 | job->reply->result = ret; |
| 3892 | job->reply_len = sizeof(uint32_t); |
| 3893 | fc_bsg_jobdone(job); |
| 3894 | return FC_DISPATCH_UNLOCKED; |
| 3895 | } |
| 3896 | |
| 3897 | |
| 3898 | /** |
| 3899 | * fc_bsg_request_handler - generic handler for bsg requests |
| 3900 | * @q: request queue to manage |
| 3901 | * @shost: Scsi_Host related to the bsg object |
| 3902 | * @rport: FC remote port related to the bsg object (optional) |
| 3903 | * @dev: device structure for bsg object |
| 3904 | */ |
| 3905 | static void |
| 3906 | fc_bsg_request_handler(struct request_queue *q, struct Scsi_Host *shost, |
| 3907 | struct fc_rport *rport, struct device *dev) |
| 3908 | { |
| 3909 | struct request *req; |
| 3910 | struct fc_bsg_job *job; |
| 3911 | enum fc_dispatch_result ret; |
| 3912 | |
| 3913 | if (!get_device(dev)) |
| 3914 | return; |
| 3915 | |
Jens Axboe | 7eaceac | 2011-03-10 08:52:07 +0100 | [diff] [blame] | 3916 | while (1) { |
Mike Christie | 2bc1c59 | 2009-11-05 11:18:09 -0600 | [diff] [blame] | 3917 | if (rport && (rport->port_state == FC_PORTSTATE_BLOCKED) && |
| 3918 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) |
| 3919 | break; |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3920 | |
| 3921 | req = blk_fetch_request(q); |
| 3922 | if (!req) |
| 3923 | break; |
| 3924 | |
| 3925 | if (rport && (rport->port_state != FC_PORTSTATE_ONLINE)) { |
| 3926 | req->errors = -ENXIO; |
| 3927 | spin_unlock_irq(q->queue_lock); |
Sarang Radke | d88a714 | 2010-03-10 04:03:04 -0600 | [diff] [blame] | 3928 | blk_end_request_all(req, -ENXIO); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3929 | spin_lock_irq(q->queue_lock); |
| 3930 | continue; |
| 3931 | } |
| 3932 | |
| 3933 | spin_unlock_irq(q->queue_lock); |
| 3934 | |
| 3935 | ret = fc_req_to_bsgjob(shost, rport, req); |
| 3936 | if (ret) { |
| 3937 | req->errors = ret; |
Sarang Radke | d88a714 | 2010-03-10 04:03:04 -0600 | [diff] [blame] | 3938 | blk_end_request_all(req, ret); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3939 | spin_lock_irq(q->queue_lock); |
| 3940 | continue; |
| 3941 | } |
| 3942 | |
| 3943 | job = req->special; |
| 3944 | |
| 3945 | /* check if we have the msgcode value at least */ |
| 3946 | if (job->request_len < sizeof(uint32_t)) { |
| 3947 | BUG_ON(job->reply_len < sizeof(uint32_t)); |
Brian King | 61ec33e | 2009-10-19 10:53:36 -0500 | [diff] [blame] | 3948 | job->reply->reply_payload_rcv_len = 0; |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 3949 | job->reply->result = -ENOMSG; |
| 3950 | job->reply_len = sizeof(uint32_t); |
| 3951 | fc_bsg_jobdone(job); |
| 3952 | spin_lock_irq(q->queue_lock); |
| 3953 | continue; |
| 3954 | } |
| 3955 | |
| 3956 | /* the dispatch routines will unlock the queue_lock */ |
| 3957 | if (rport) |
| 3958 | ret = fc_bsg_rport_dispatch(q, shost, rport, job); |
| 3959 | else |
| 3960 | ret = fc_bsg_host_dispatch(q, shost, job); |
| 3961 | |
| 3962 | /* did dispatcher hit state that can't process any more */ |
| 3963 | if (ret == FC_DISPATCH_BREAK) |
| 3964 | break; |
| 3965 | |
| 3966 | /* did dispatcher had released the lock */ |
| 3967 | if (ret == FC_DISPATCH_UNLOCKED) |
| 3968 | spin_lock_irq(q->queue_lock); |
| 3969 | } |
| 3970 | |
| 3971 | spin_unlock_irq(q->queue_lock); |
| 3972 | put_device(dev); |
| 3973 | spin_lock_irq(q->queue_lock); |
| 3974 | } |
| 3975 | |
| 3976 | |
| 3977 | /** |
| 3978 | * fc_bsg_host_handler - handler for bsg requests for a fc host |
| 3979 | * @q: fc host request queue |
| 3980 | */ |
| 3981 | static void |
| 3982 | fc_bsg_host_handler(struct request_queue *q) |
| 3983 | { |
| 3984 | struct Scsi_Host *shost = q->queuedata; |
| 3985 | |
| 3986 | fc_bsg_request_handler(q, shost, NULL, &shost->shost_gendev); |
| 3987 | } |
| 3988 | |
| 3989 | |
| 3990 | /** |
| 3991 | * fc_bsg_rport_handler - handler for bsg requests for a fc rport |
| 3992 | * @q: rport request queue |
| 3993 | */ |
| 3994 | static void |
| 3995 | fc_bsg_rport_handler(struct request_queue *q) |
| 3996 | { |
| 3997 | struct fc_rport *rport = q->queuedata; |
| 3998 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 3999 | |
| 4000 | fc_bsg_request_handler(q, shost, rport, &rport->dev); |
| 4001 | } |
| 4002 | |
| 4003 | |
| 4004 | /** |
| 4005 | * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests |
| 4006 | * @shost: shost for fc_host |
| 4007 | * @fc_host: fc_host adding the structures to |
| 4008 | */ |
| 4009 | static int |
| 4010 | fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host) |
| 4011 | { |
| 4012 | struct device *dev = &shost->shost_gendev; |
| 4013 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 4014 | struct request_queue *q; |
| 4015 | int err; |
James Bottomley | 3c559ea | 2009-06-21 12:11:43 -0500 | [diff] [blame] | 4016 | char bsg_name[20]; |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 4017 | |
| 4018 | fc_host->rqst_q = NULL; |
| 4019 | |
| 4020 | if (!i->f->bsg_request) |
| 4021 | return -ENOTSUPP; |
| 4022 | |
| 4023 | snprintf(bsg_name, sizeof(bsg_name), |
| 4024 | "fc_host%d", shost->host_no); |
| 4025 | |
| 4026 | q = __scsi_alloc_queue(shost, fc_bsg_host_handler); |
| 4027 | if (!q) { |
| 4028 | printk(KERN_ERR "fc_host%d: bsg interface failed to " |
| 4029 | "initialize - no request queue\n", |
| 4030 | shost->host_no); |
| 4031 | return -ENOMEM; |
| 4032 | } |
| 4033 | |
| 4034 | q->queuedata = shost; |
| 4035 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
Giridhar Malavali | b5c6f77 | 2009-06-19 16:26:53 -0700 | [diff] [blame] | 4036 | blk_queue_softirq_done(q, fc_bsg_softirq_done); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 4037 | blk_queue_rq_timed_out(q, fc_bsg_job_timeout); |
| 4038 | blk_queue_rq_timeout(q, FC_DEFAULT_BSG_TIMEOUT); |
| 4039 | |
| 4040 | err = bsg_register_queue(q, dev, bsg_name, NULL); |
| 4041 | if (err) { |
| 4042 | printk(KERN_ERR "fc_host%d: bsg interface failed to " |
| 4043 | "initialize - register queue\n", |
| 4044 | shost->host_no); |
| 4045 | blk_cleanup_queue(q); |
| 4046 | return err; |
| 4047 | } |
| 4048 | |
| 4049 | fc_host->rqst_q = q; |
| 4050 | return 0; |
| 4051 | } |
| 4052 | |
| 4053 | |
| 4054 | /** |
| 4055 | * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests |
| 4056 | * @shost: shost that rport is attached to |
| 4057 | * @rport: rport that the bsg hooks are being attached to |
| 4058 | */ |
| 4059 | static int |
| 4060 | fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport) |
| 4061 | { |
| 4062 | struct device *dev = &rport->dev; |
| 4063 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 4064 | struct request_queue *q; |
| 4065 | int err; |
| 4066 | |
| 4067 | rport->rqst_q = NULL; |
| 4068 | |
| 4069 | if (!i->f->bsg_request) |
| 4070 | return -ENOTSUPP; |
| 4071 | |
| 4072 | q = __scsi_alloc_queue(shost, fc_bsg_rport_handler); |
| 4073 | if (!q) { |
| 4074 | printk(KERN_ERR "%s: bsg interface failed to " |
| 4075 | "initialize - no request queue\n", |
| 4076 | dev->kobj.name); |
| 4077 | return -ENOMEM; |
| 4078 | } |
| 4079 | |
| 4080 | q->queuedata = rport; |
| 4081 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
Giridhar Malavali | b5c6f77 | 2009-06-19 16:26:53 -0700 | [diff] [blame] | 4082 | blk_queue_softirq_done(q, fc_bsg_softirq_done); |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 4083 | blk_queue_rq_timed_out(q, fc_bsg_job_timeout); |
| 4084 | blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT); |
| 4085 | |
| 4086 | err = bsg_register_queue(q, dev, NULL, NULL); |
| 4087 | if (err) { |
| 4088 | printk(KERN_ERR "%s: bsg interface failed to " |
| 4089 | "initialize - register queue\n", |
| 4090 | dev->kobj.name); |
| 4091 | blk_cleanup_queue(q); |
| 4092 | return err; |
| 4093 | } |
| 4094 | |
| 4095 | rport->rqst_q = q; |
| 4096 | return 0; |
| 4097 | } |
| 4098 | |
| 4099 | |
| 4100 | /** |
| 4101 | * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports |
| 4102 | * @q: the request_queue that is to be torn down. |
James Smart | 78d1634 | 2010-08-31 22:27:31 -0400 | [diff] [blame] | 4103 | * |
| 4104 | * Notes: |
| 4105 | * Before unregistering the queue empty any requests that are blocked |
| 4106 | * |
| 4107 | * |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 4108 | */ |
| 4109 | static void |
| 4110 | fc_bsg_remove(struct request_queue *q) |
| 4111 | { |
James Smart | 78d1634 | 2010-08-31 22:27:31 -0400 | [diff] [blame] | 4112 | struct request *req; /* block request */ |
| 4113 | int counts; /* totals for request_list count and starved */ |
| 4114 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 4115 | if (q) { |
James Smart | 78d1634 | 2010-08-31 22:27:31 -0400 | [diff] [blame] | 4116 | /* Stop taking in new requests */ |
| 4117 | spin_lock_irq(q->queue_lock); |
| 4118 | blk_stop_queue(q); |
| 4119 | |
| 4120 | /* drain all requests in the queue */ |
| 4121 | while (1) { |
| 4122 | /* need the lock to fetch a request |
| 4123 | * this may fetch the same reqeust as the previous pass |
| 4124 | */ |
| 4125 | req = blk_fetch_request(q); |
| 4126 | /* save requests in use and starved */ |
| 4127 | counts = q->rq.count[0] + q->rq.count[1] + |
| 4128 | q->rq.starved[0] + q->rq.starved[1]; |
| 4129 | spin_unlock_irq(q->queue_lock); |
| 4130 | /* any requests still outstanding? */ |
| 4131 | if (counts == 0) |
| 4132 | break; |
| 4133 | |
| 4134 | /* This may be the same req as the previous iteration, |
| 4135 | * always send the blk_end_request_all after a prefetch. |
| 4136 | * It is not okay to not end the request because the |
| 4137 | * prefetch started the request. |
| 4138 | */ |
| 4139 | if (req) { |
| 4140 | /* return -ENXIO to indicate that this queue is |
| 4141 | * going away |
| 4142 | */ |
| 4143 | req->errors = -ENXIO; |
| 4144 | blk_end_request_all(req, -ENXIO); |
| 4145 | } |
| 4146 | |
| 4147 | msleep(200); /* allow bsg to possibly finish */ |
| 4148 | spin_lock_irq(q->queue_lock); |
| 4149 | } |
| 4150 | |
James Smart | 9e4f5e2 | 2009-03-26 13:33:19 -0400 | [diff] [blame] | 4151 | bsg_unregister_queue(q); |
| 4152 | blk_cleanup_queue(q); |
| 4153 | } |
| 4154 | } |
| 4155 | |
| 4156 | |
James Smart | 9ef3e4a | 2007-05-24 19:04:44 -0400 | [diff] [blame] | 4157 | /* Original Author: Martin Hicks */ |
| 4158 | MODULE_AUTHOR("James Smart"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4159 | MODULE_DESCRIPTION("FC Transport Attributes"); |
| 4160 | MODULE_LICENSE("GPL"); |
| 4161 | |
| 4162 | module_init(fc_transport_init); |
| 4163 | module_exit(fc_transport_exit); |