Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 1 | /* -*- mode: c; c-basic-offset: 8; -*- |
| 2 | * vim: noexpandtab sw=8 ts=8 sts=0: |
| 3 | * |
| 4 | * Copyright (C) 2004, 2005 Oracle. All rights reserved. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2 of the License, or (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 GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public |
| 17 | * License along with this program; if not, write to the |
| 18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | * Boston, MA 021110-1307, USA. |
| 20 | */ |
| 21 | |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/sysctl.h> |
| 25 | #include <linux/configfs.h> |
| 26 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 27 | #include "tcp.h" |
| 28 | #include "nodemanager.h" |
| 29 | #include "heartbeat.h" |
| 30 | #include "masklog.h" |
| 31 | #include "sys.h" |
| 32 | #include "ver.h" |
| 33 | |
| 34 | /* for now we operate under the assertion that there can be only one |
| 35 | * cluster active at a time. Changing this will require trickling |
| 36 | * cluster references throughout where nodes are looked up */ |
Andrew Beekhof | 296b75e | 2006-12-04 14:04:53 +0100 | [diff] [blame] | 37 | struct o2nm_cluster *o2nm_single_cluster = NULL; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 38 | |
| 39 | #define OCFS2_MAX_HB_CTL_PATH 256 |
| 40 | static char ocfs2_hb_ctl_path[OCFS2_MAX_HB_CTL_PATH] = "/sbin/ocfs2_hb_ctl"; |
| 41 | |
| 42 | static ctl_table ocfs2_nm_table[] = { |
| 43 | { |
| 44 | .ctl_name = 1, |
| 45 | .procname = "hb_ctl_path", |
| 46 | .data = ocfs2_hb_ctl_path, |
| 47 | .maxlen = OCFS2_MAX_HB_CTL_PATH, |
| 48 | .mode = 0644, |
| 49 | .proc_handler = &proc_dostring, |
| 50 | .strategy = &sysctl_string, |
| 51 | }, |
| 52 | { .ctl_name = 0 } |
| 53 | }; |
| 54 | |
| 55 | static ctl_table ocfs2_mod_table[] = { |
| 56 | { |
Eric W. Biederman | 0e03036 | 2007-02-14 00:33:57 -0800 | [diff] [blame] | 57 | .ctl_name = FS_OCFS2_NM, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 58 | .procname = "nm", |
| 59 | .data = NULL, |
| 60 | .maxlen = 0, |
| 61 | .mode = 0555, |
| 62 | .child = ocfs2_nm_table |
| 63 | }, |
| 64 | { .ctl_name = 0} |
| 65 | }; |
| 66 | |
| 67 | static ctl_table ocfs2_kern_table[] = { |
| 68 | { |
Eric W. Biederman | 0e03036 | 2007-02-14 00:33:57 -0800 | [diff] [blame] | 69 | .ctl_name = FS_OCFS2, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 70 | .procname = "ocfs2", |
| 71 | .data = NULL, |
| 72 | .maxlen = 0, |
| 73 | .mode = 0555, |
| 74 | .child = ocfs2_mod_table |
| 75 | }, |
| 76 | { .ctl_name = 0} |
| 77 | }; |
| 78 | |
| 79 | static ctl_table ocfs2_root_table[] = { |
| 80 | { |
| 81 | .ctl_name = CTL_FS, |
| 82 | .procname = "fs", |
| 83 | .data = NULL, |
| 84 | .maxlen = 0, |
| 85 | .mode = 0555, |
| 86 | .child = ocfs2_kern_table |
| 87 | }, |
| 88 | { .ctl_name = 0 } |
| 89 | }; |
| 90 | |
| 91 | static struct ctl_table_header *ocfs2_table_header = NULL; |
| 92 | |
| 93 | const char *o2nm_get_hb_ctl_path(void) |
| 94 | { |
| 95 | return ocfs2_hb_ctl_path; |
| 96 | } |
| 97 | EXPORT_SYMBOL_GPL(o2nm_get_hb_ctl_path); |
| 98 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 99 | struct o2nm_node *o2nm_get_node_by_num(u8 node_num) |
| 100 | { |
| 101 | struct o2nm_node *node = NULL; |
| 102 | |
| 103 | if (node_num >= O2NM_MAX_NODES || o2nm_single_cluster == NULL) |
| 104 | goto out; |
| 105 | |
| 106 | read_lock(&o2nm_single_cluster->cl_nodes_lock); |
| 107 | node = o2nm_single_cluster->cl_nodes[node_num]; |
| 108 | if (node) |
| 109 | config_item_get(&node->nd_item); |
| 110 | read_unlock(&o2nm_single_cluster->cl_nodes_lock); |
| 111 | out: |
| 112 | return node; |
| 113 | } |
| 114 | EXPORT_SYMBOL_GPL(o2nm_get_node_by_num); |
| 115 | |
| 116 | int o2nm_configured_node_map(unsigned long *map, unsigned bytes) |
| 117 | { |
| 118 | struct o2nm_cluster *cluster = o2nm_single_cluster; |
| 119 | |
| 120 | BUG_ON(bytes < (sizeof(cluster->cl_nodes_bitmap))); |
| 121 | |
| 122 | if (cluster == NULL) |
| 123 | return -EINVAL; |
| 124 | |
| 125 | read_lock(&cluster->cl_nodes_lock); |
| 126 | memcpy(map, cluster->cl_nodes_bitmap, sizeof(cluster->cl_nodes_bitmap)); |
| 127 | read_unlock(&cluster->cl_nodes_lock); |
| 128 | |
| 129 | return 0; |
| 130 | } |
| 131 | EXPORT_SYMBOL_GPL(o2nm_configured_node_map); |
| 132 | |
| 133 | static struct o2nm_node *o2nm_node_ip_tree_lookup(struct o2nm_cluster *cluster, |
| 134 | __be32 ip_needle, |
| 135 | struct rb_node ***ret_p, |
| 136 | struct rb_node **ret_parent) |
| 137 | { |
| 138 | struct rb_node **p = &cluster->cl_node_ip_tree.rb_node; |
| 139 | struct rb_node *parent = NULL; |
| 140 | struct o2nm_node *node, *ret = NULL; |
| 141 | |
| 142 | while (*p) { |
Akinobu Mita | 79cd22d | 2006-10-12 14:29:33 +0900 | [diff] [blame] | 143 | int cmp; |
| 144 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 145 | parent = *p; |
| 146 | node = rb_entry(parent, struct o2nm_node, nd_ip_node); |
| 147 | |
Akinobu Mita | 79cd22d | 2006-10-12 14:29:33 +0900 | [diff] [blame] | 148 | cmp = memcmp(&ip_needle, &node->nd_ipv4_address, |
| 149 | sizeof(ip_needle)); |
| 150 | if (cmp < 0) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 151 | p = &(*p)->rb_left; |
Akinobu Mita | 79cd22d | 2006-10-12 14:29:33 +0900 | [diff] [blame] | 152 | else if (cmp > 0) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 153 | p = &(*p)->rb_right; |
| 154 | else { |
| 155 | ret = node; |
| 156 | break; |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | if (ret_p != NULL) |
| 161 | *ret_p = p; |
| 162 | if (ret_parent != NULL) |
| 163 | *ret_parent = parent; |
| 164 | |
| 165 | return ret; |
| 166 | } |
| 167 | |
| 168 | struct o2nm_node *o2nm_get_node_by_ip(__be32 addr) |
| 169 | { |
| 170 | struct o2nm_node *node = NULL; |
| 171 | struct o2nm_cluster *cluster = o2nm_single_cluster; |
| 172 | |
| 173 | if (cluster == NULL) |
| 174 | goto out; |
| 175 | |
| 176 | read_lock(&cluster->cl_nodes_lock); |
| 177 | node = o2nm_node_ip_tree_lookup(cluster, addr, NULL, NULL); |
| 178 | if (node) |
| 179 | config_item_get(&node->nd_item); |
| 180 | read_unlock(&cluster->cl_nodes_lock); |
| 181 | |
| 182 | out: |
| 183 | return node; |
| 184 | } |
| 185 | EXPORT_SYMBOL_GPL(o2nm_get_node_by_ip); |
| 186 | |
| 187 | void o2nm_node_put(struct o2nm_node *node) |
| 188 | { |
| 189 | config_item_put(&node->nd_item); |
| 190 | } |
| 191 | EXPORT_SYMBOL_GPL(o2nm_node_put); |
| 192 | |
| 193 | void o2nm_node_get(struct o2nm_node *node) |
| 194 | { |
| 195 | config_item_get(&node->nd_item); |
| 196 | } |
| 197 | EXPORT_SYMBOL_GPL(o2nm_node_get); |
| 198 | |
| 199 | u8 o2nm_this_node(void) |
| 200 | { |
| 201 | u8 node_num = O2NM_MAX_NODES; |
| 202 | |
| 203 | if (o2nm_single_cluster && o2nm_single_cluster->cl_has_local) |
| 204 | node_num = o2nm_single_cluster->cl_local_node; |
| 205 | |
| 206 | return node_num; |
| 207 | } |
| 208 | EXPORT_SYMBOL_GPL(o2nm_this_node); |
| 209 | |
| 210 | /* node configfs bits */ |
| 211 | |
| 212 | static struct o2nm_cluster *to_o2nm_cluster(struct config_item *item) |
| 213 | { |
| 214 | return item ? |
| 215 | container_of(to_config_group(item), struct o2nm_cluster, |
| 216 | cl_group) |
| 217 | : NULL; |
| 218 | } |
| 219 | |
| 220 | static struct o2nm_node *to_o2nm_node(struct config_item *item) |
| 221 | { |
| 222 | return item ? container_of(item, struct o2nm_node, nd_item) : NULL; |
| 223 | } |
| 224 | |
| 225 | static void o2nm_node_release(struct config_item *item) |
| 226 | { |
| 227 | struct o2nm_node *node = to_o2nm_node(item); |
| 228 | kfree(node); |
| 229 | } |
| 230 | |
| 231 | static ssize_t o2nm_node_num_read(struct o2nm_node *node, char *page) |
| 232 | { |
| 233 | return sprintf(page, "%d\n", node->nd_num); |
| 234 | } |
| 235 | |
| 236 | static struct o2nm_cluster *to_o2nm_cluster_from_node(struct o2nm_node *node) |
| 237 | { |
| 238 | /* through the first node_set .parent |
| 239 | * mycluster/nodes/mynode == o2nm_cluster->o2nm_node_group->o2nm_node */ |
| 240 | return to_o2nm_cluster(node->nd_item.ci_parent->ci_parent); |
| 241 | } |
| 242 | |
| 243 | enum { |
| 244 | O2NM_NODE_ATTR_NUM = 0, |
| 245 | O2NM_NODE_ATTR_PORT, |
| 246 | O2NM_NODE_ATTR_ADDRESS, |
| 247 | O2NM_NODE_ATTR_LOCAL, |
| 248 | }; |
| 249 | |
| 250 | static ssize_t o2nm_node_num_write(struct o2nm_node *node, const char *page, |
| 251 | size_t count) |
| 252 | { |
| 253 | struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node); |
| 254 | unsigned long tmp; |
| 255 | char *p = (char *)page; |
| 256 | |
| 257 | tmp = simple_strtoul(p, &p, 0); |
| 258 | if (!p || (*p && (*p != '\n'))) |
| 259 | return -EINVAL; |
| 260 | |
| 261 | if (tmp >= O2NM_MAX_NODES) |
| 262 | return -ERANGE; |
| 263 | |
| 264 | /* once we're in the cl_nodes tree networking can look us up by |
| 265 | * node number and try to use our address and port attributes |
| 266 | * to connect to this node.. make sure that they've been set |
| 267 | * before writing the node attribute? */ |
| 268 | if (!test_bit(O2NM_NODE_ATTR_ADDRESS, &node->nd_set_attributes) || |
| 269 | !test_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes)) |
| 270 | return -EINVAL; /* XXX */ |
| 271 | |
| 272 | write_lock(&cluster->cl_nodes_lock); |
| 273 | if (cluster->cl_nodes[tmp]) |
| 274 | p = NULL; |
| 275 | else { |
| 276 | cluster->cl_nodes[tmp] = node; |
| 277 | node->nd_num = tmp; |
| 278 | set_bit(tmp, cluster->cl_nodes_bitmap); |
| 279 | } |
| 280 | write_unlock(&cluster->cl_nodes_lock); |
| 281 | if (p == NULL) |
| 282 | return -EEXIST; |
| 283 | |
| 284 | return count; |
| 285 | } |
| 286 | static ssize_t o2nm_node_ipv4_port_read(struct o2nm_node *node, char *page) |
| 287 | { |
| 288 | return sprintf(page, "%u\n", ntohs(node->nd_ipv4_port)); |
| 289 | } |
| 290 | |
| 291 | static ssize_t o2nm_node_ipv4_port_write(struct o2nm_node *node, |
| 292 | const char *page, size_t count) |
| 293 | { |
| 294 | unsigned long tmp; |
| 295 | char *p = (char *)page; |
| 296 | |
| 297 | tmp = simple_strtoul(p, &p, 0); |
| 298 | if (!p || (*p && (*p != '\n'))) |
| 299 | return -EINVAL; |
| 300 | |
| 301 | if (tmp == 0) |
| 302 | return -EINVAL; |
| 303 | if (tmp >= (u16)-1) |
| 304 | return -ERANGE; |
| 305 | |
| 306 | node->nd_ipv4_port = htons(tmp); |
| 307 | |
| 308 | return count; |
| 309 | } |
| 310 | |
| 311 | static ssize_t o2nm_node_ipv4_address_read(struct o2nm_node *node, char *page) |
| 312 | { |
| 313 | return sprintf(page, "%u.%u.%u.%u\n", NIPQUAD(node->nd_ipv4_address)); |
| 314 | } |
| 315 | |
| 316 | static ssize_t o2nm_node_ipv4_address_write(struct o2nm_node *node, |
| 317 | const char *page, |
| 318 | size_t count) |
| 319 | { |
| 320 | struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node); |
| 321 | int ret, i; |
| 322 | struct rb_node **p, *parent; |
| 323 | unsigned int octets[4]; |
| 324 | __be32 ipv4_addr = 0; |
| 325 | |
| 326 | ret = sscanf(page, "%3u.%3u.%3u.%3u", &octets[3], &octets[2], |
| 327 | &octets[1], &octets[0]); |
| 328 | if (ret != 4) |
| 329 | return -EINVAL; |
| 330 | |
| 331 | for (i = 0; i < ARRAY_SIZE(octets); i++) { |
| 332 | if (octets[i] > 255) |
| 333 | return -ERANGE; |
| 334 | be32_add_cpu(&ipv4_addr, octets[i] << (i * 8)); |
| 335 | } |
| 336 | |
| 337 | ret = 0; |
| 338 | write_lock(&cluster->cl_nodes_lock); |
| 339 | if (o2nm_node_ip_tree_lookup(cluster, ipv4_addr, &p, &parent)) |
| 340 | ret = -EEXIST; |
| 341 | else { |
| 342 | rb_link_node(&node->nd_ip_node, parent, p); |
| 343 | rb_insert_color(&node->nd_ip_node, &cluster->cl_node_ip_tree); |
| 344 | } |
| 345 | write_unlock(&cluster->cl_nodes_lock); |
| 346 | if (ret) |
| 347 | return ret; |
| 348 | |
| 349 | memcpy(&node->nd_ipv4_address, &ipv4_addr, sizeof(ipv4_addr)); |
| 350 | |
| 351 | return count; |
| 352 | } |
| 353 | |
| 354 | static ssize_t o2nm_node_local_read(struct o2nm_node *node, char *page) |
| 355 | { |
| 356 | return sprintf(page, "%d\n", node->nd_local); |
| 357 | } |
| 358 | |
| 359 | static ssize_t o2nm_node_local_write(struct o2nm_node *node, const char *page, |
| 360 | size_t count) |
| 361 | { |
| 362 | struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node); |
| 363 | unsigned long tmp; |
| 364 | char *p = (char *)page; |
| 365 | ssize_t ret; |
| 366 | |
| 367 | tmp = simple_strtoul(p, &p, 0); |
| 368 | if (!p || (*p && (*p != '\n'))) |
| 369 | return -EINVAL; |
| 370 | |
| 371 | tmp = !!tmp; /* boolean of whether this node wants to be local */ |
| 372 | |
| 373 | /* setting local turns on networking rx for now so we require having |
| 374 | * set everything else first */ |
| 375 | if (!test_bit(O2NM_NODE_ATTR_ADDRESS, &node->nd_set_attributes) || |
| 376 | !test_bit(O2NM_NODE_ATTR_NUM, &node->nd_set_attributes) || |
| 377 | !test_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes)) |
| 378 | return -EINVAL; /* XXX */ |
| 379 | |
| 380 | /* the only failure case is trying to set a new local node |
| 381 | * when a different one is already set */ |
| 382 | if (tmp && tmp == cluster->cl_has_local && |
| 383 | cluster->cl_local_node != node->nd_num) |
| 384 | return -EBUSY; |
| 385 | |
| 386 | /* bring up the rx thread if we're setting the new local node. */ |
| 387 | if (tmp && !cluster->cl_has_local) { |
| 388 | ret = o2net_start_listening(node); |
| 389 | if (ret) |
| 390 | return ret; |
| 391 | } |
| 392 | |
| 393 | if (!tmp && cluster->cl_has_local && |
| 394 | cluster->cl_local_node == node->nd_num) { |
| 395 | o2net_stop_listening(node); |
| 396 | cluster->cl_local_node = O2NM_INVALID_NODE_NUM; |
| 397 | } |
| 398 | |
| 399 | node->nd_local = tmp; |
| 400 | if (node->nd_local) { |
| 401 | cluster->cl_has_local = tmp; |
| 402 | cluster->cl_local_node = node->nd_num; |
| 403 | } |
| 404 | |
| 405 | return count; |
| 406 | } |
| 407 | |
| 408 | struct o2nm_node_attribute { |
| 409 | struct configfs_attribute attr; |
| 410 | ssize_t (*show)(struct o2nm_node *, char *); |
| 411 | ssize_t (*store)(struct o2nm_node *, const char *, size_t); |
| 412 | }; |
| 413 | |
| 414 | static struct o2nm_node_attribute o2nm_node_attr_num = { |
| 415 | .attr = { .ca_owner = THIS_MODULE, |
| 416 | .ca_name = "num", |
| 417 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 418 | .show = o2nm_node_num_read, |
| 419 | .store = o2nm_node_num_write, |
| 420 | }; |
| 421 | |
| 422 | static struct o2nm_node_attribute o2nm_node_attr_ipv4_port = { |
| 423 | .attr = { .ca_owner = THIS_MODULE, |
| 424 | .ca_name = "ipv4_port", |
| 425 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 426 | .show = o2nm_node_ipv4_port_read, |
| 427 | .store = o2nm_node_ipv4_port_write, |
| 428 | }; |
| 429 | |
| 430 | static struct o2nm_node_attribute o2nm_node_attr_ipv4_address = { |
| 431 | .attr = { .ca_owner = THIS_MODULE, |
| 432 | .ca_name = "ipv4_address", |
| 433 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 434 | .show = o2nm_node_ipv4_address_read, |
| 435 | .store = o2nm_node_ipv4_address_write, |
| 436 | }; |
| 437 | |
| 438 | static struct o2nm_node_attribute o2nm_node_attr_local = { |
| 439 | .attr = { .ca_owner = THIS_MODULE, |
| 440 | .ca_name = "local", |
| 441 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 442 | .show = o2nm_node_local_read, |
| 443 | .store = o2nm_node_local_write, |
| 444 | }; |
| 445 | |
| 446 | static struct configfs_attribute *o2nm_node_attrs[] = { |
| 447 | [O2NM_NODE_ATTR_NUM] = &o2nm_node_attr_num.attr, |
| 448 | [O2NM_NODE_ATTR_PORT] = &o2nm_node_attr_ipv4_port.attr, |
| 449 | [O2NM_NODE_ATTR_ADDRESS] = &o2nm_node_attr_ipv4_address.attr, |
| 450 | [O2NM_NODE_ATTR_LOCAL] = &o2nm_node_attr_local.attr, |
| 451 | NULL, |
| 452 | }; |
| 453 | |
| 454 | static int o2nm_attr_index(struct configfs_attribute *attr) |
| 455 | { |
| 456 | int i; |
| 457 | for (i = 0; i < ARRAY_SIZE(o2nm_node_attrs); i++) { |
| 458 | if (attr == o2nm_node_attrs[i]) |
| 459 | return i; |
| 460 | } |
| 461 | BUG(); |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static ssize_t o2nm_node_show(struct config_item *item, |
| 466 | struct configfs_attribute *attr, |
| 467 | char *page) |
| 468 | { |
| 469 | struct o2nm_node *node = to_o2nm_node(item); |
| 470 | struct o2nm_node_attribute *o2nm_node_attr = |
| 471 | container_of(attr, struct o2nm_node_attribute, attr); |
| 472 | ssize_t ret = 0; |
| 473 | |
| 474 | if (o2nm_node_attr->show) |
| 475 | ret = o2nm_node_attr->show(node, page); |
| 476 | return ret; |
| 477 | } |
| 478 | |
| 479 | static ssize_t o2nm_node_store(struct config_item *item, |
| 480 | struct configfs_attribute *attr, |
| 481 | const char *page, size_t count) |
| 482 | { |
| 483 | struct o2nm_node *node = to_o2nm_node(item); |
| 484 | struct o2nm_node_attribute *o2nm_node_attr = |
| 485 | container_of(attr, struct o2nm_node_attribute, attr); |
| 486 | ssize_t ret; |
| 487 | int attr_index = o2nm_attr_index(attr); |
| 488 | |
| 489 | if (o2nm_node_attr->store == NULL) { |
| 490 | ret = -EINVAL; |
| 491 | goto out; |
| 492 | } |
| 493 | |
| 494 | if (test_bit(attr_index, &node->nd_set_attributes)) |
| 495 | return -EBUSY; |
| 496 | |
| 497 | ret = o2nm_node_attr->store(node, page, count); |
| 498 | if (ret < count) |
| 499 | goto out; |
| 500 | |
| 501 | set_bit(attr_index, &node->nd_set_attributes); |
| 502 | out: |
| 503 | return ret; |
| 504 | } |
| 505 | |
| 506 | static struct configfs_item_operations o2nm_node_item_ops = { |
| 507 | .release = o2nm_node_release, |
| 508 | .show_attribute = o2nm_node_show, |
| 509 | .store_attribute = o2nm_node_store, |
| 510 | }; |
| 511 | |
| 512 | static struct config_item_type o2nm_node_type = { |
| 513 | .ct_item_ops = &o2nm_node_item_ops, |
| 514 | .ct_attrs = o2nm_node_attrs, |
| 515 | .ct_owner = THIS_MODULE, |
| 516 | }; |
| 517 | |
| 518 | /* node set */ |
| 519 | |
| 520 | struct o2nm_node_group { |
| 521 | struct config_group ns_group; |
| 522 | /* some stuff? */ |
| 523 | }; |
| 524 | |
| 525 | #if 0 |
| 526 | static struct o2nm_node_group *to_o2nm_node_group(struct config_group *group) |
| 527 | { |
| 528 | return group ? |
| 529 | container_of(group, struct o2nm_node_group, ns_group) |
| 530 | : NULL; |
| 531 | } |
| 532 | #endif |
| 533 | |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 534 | struct o2nm_cluster_attribute { |
| 535 | struct configfs_attribute attr; |
| 536 | ssize_t (*show)(struct o2nm_cluster *, char *); |
| 537 | ssize_t (*store)(struct o2nm_cluster *, const char *, size_t); |
| 538 | }; |
| 539 | |
| 540 | static ssize_t o2nm_cluster_attr_write(const char *page, ssize_t count, |
| 541 | unsigned int *val) |
| 542 | { |
| 543 | unsigned long tmp; |
| 544 | char *p = (char *)page; |
| 545 | |
| 546 | tmp = simple_strtoul(p, &p, 0); |
| 547 | if (!p || (*p && (*p != '\n'))) |
| 548 | return -EINVAL; |
| 549 | |
| 550 | if (tmp == 0) |
| 551 | return -EINVAL; |
| 552 | if (tmp >= (u32)-1) |
| 553 | return -ERANGE; |
| 554 | |
| 555 | *val = tmp; |
| 556 | |
| 557 | return count; |
| 558 | } |
| 559 | |
| 560 | static ssize_t o2nm_cluster_attr_idle_timeout_ms_read( |
| 561 | struct o2nm_cluster *cluster, char *page) |
| 562 | { |
| 563 | return sprintf(page, "%u\n", cluster->cl_idle_timeout_ms); |
| 564 | } |
| 565 | |
| 566 | static ssize_t o2nm_cluster_attr_idle_timeout_ms_write( |
| 567 | struct o2nm_cluster *cluster, const char *page, size_t count) |
| 568 | { |
| 569 | ssize_t ret; |
| 570 | unsigned int val; |
| 571 | |
| 572 | ret = o2nm_cluster_attr_write(page, count, &val); |
| 573 | |
| 574 | if (ret > 0) { |
Andrew Beekhof | 828ae6a | 2006-12-04 14:04:55 +0100 | [diff] [blame] | 575 | if (cluster->cl_idle_timeout_ms != val |
| 576 | && o2net_num_connected_peers()) { |
| 577 | mlog(ML_NOTICE, |
| 578 | "o2net: cannot change idle timeout after " |
| 579 | "the first peer has agreed to it." |
| 580 | " %d connected peers\n", |
| 581 | o2net_num_connected_peers()); |
| 582 | ret = -EINVAL; |
| 583 | } else if (val <= cluster->cl_keepalive_delay_ms) { |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 584 | mlog(ML_NOTICE, "o2net: idle timeout must be larger " |
| 585 | "than keepalive delay\n"); |
Andrew Beekhof | 828ae6a | 2006-12-04 14:04:55 +0100 | [diff] [blame] | 586 | ret = -EINVAL; |
| 587 | } else { |
| 588 | cluster->cl_idle_timeout_ms = val; |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 589 | } |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | return ret; |
| 593 | } |
| 594 | |
| 595 | static ssize_t o2nm_cluster_attr_keepalive_delay_ms_read( |
| 596 | struct o2nm_cluster *cluster, char *page) |
| 597 | { |
| 598 | return sprintf(page, "%u\n", cluster->cl_keepalive_delay_ms); |
| 599 | } |
| 600 | |
| 601 | static ssize_t o2nm_cluster_attr_keepalive_delay_ms_write( |
| 602 | struct o2nm_cluster *cluster, const char *page, size_t count) |
| 603 | { |
| 604 | ssize_t ret; |
| 605 | unsigned int val; |
| 606 | |
| 607 | ret = o2nm_cluster_attr_write(page, count, &val); |
| 608 | |
| 609 | if (ret > 0) { |
Andrew Beekhof | 828ae6a | 2006-12-04 14:04:55 +0100 | [diff] [blame] | 610 | if (cluster->cl_keepalive_delay_ms != val |
| 611 | && o2net_num_connected_peers()) { |
| 612 | mlog(ML_NOTICE, |
| 613 | "o2net: cannot change keepalive delay after" |
| 614 | " the first peer has agreed to it." |
| 615 | " %d connected peers\n", |
| 616 | o2net_num_connected_peers()); |
| 617 | ret = -EINVAL; |
| 618 | } else if (val >= cluster->cl_idle_timeout_ms) { |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 619 | mlog(ML_NOTICE, "o2net: keepalive delay must be " |
| 620 | "smaller than idle timeout\n"); |
Andrew Beekhof | 828ae6a | 2006-12-04 14:04:55 +0100 | [diff] [blame] | 621 | ret = -EINVAL; |
| 622 | } else { |
| 623 | cluster->cl_keepalive_delay_ms = val; |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 624 | } |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | return ret; |
| 628 | } |
| 629 | |
| 630 | static ssize_t o2nm_cluster_attr_reconnect_delay_ms_read( |
| 631 | struct o2nm_cluster *cluster, char *page) |
| 632 | { |
| 633 | return sprintf(page, "%u\n", cluster->cl_reconnect_delay_ms); |
| 634 | } |
| 635 | |
| 636 | static ssize_t o2nm_cluster_attr_reconnect_delay_ms_write( |
| 637 | struct o2nm_cluster *cluster, const char *page, size_t count) |
| 638 | { |
| 639 | return o2nm_cluster_attr_write(page, count, |
| 640 | &cluster->cl_reconnect_delay_ms); |
| 641 | } |
| 642 | static struct o2nm_cluster_attribute o2nm_cluster_attr_idle_timeout_ms = { |
| 643 | .attr = { .ca_owner = THIS_MODULE, |
| 644 | .ca_name = "idle_timeout_ms", |
| 645 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 646 | .show = o2nm_cluster_attr_idle_timeout_ms_read, |
| 647 | .store = o2nm_cluster_attr_idle_timeout_ms_write, |
| 648 | }; |
| 649 | |
| 650 | static struct o2nm_cluster_attribute o2nm_cluster_attr_keepalive_delay_ms = { |
| 651 | .attr = { .ca_owner = THIS_MODULE, |
| 652 | .ca_name = "keepalive_delay_ms", |
| 653 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 654 | .show = o2nm_cluster_attr_keepalive_delay_ms_read, |
| 655 | .store = o2nm_cluster_attr_keepalive_delay_ms_write, |
| 656 | }; |
| 657 | |
| 658 | static struct o2nm_cluster_attribute o2nm_cluster_attr_reconnect_delay_ms = { |
| 659 | .attr = { .ca_owner = THIS_MODULE, |
| 660 | .ca_name = "reconnect_delay_ms", |
| 661 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 662 | .show = o2nm_cluster_attr_reconnect_delay_ms_read, |
| 663 | .store = o2nm_cluster_attr_reconnect_delay_ms_write, |
| 664 | }; |
| 665 | |
| 666 | static struct configfs_attribute *o2nm_cluster_attrs[] = { |
| 667 | &o2nm_cluster_attr_idle_timeout_ms.attr, |
| 668 | &o2nm_cluster_attr_keepalive_delay_ms.attr, |
| 669 | &o2nm_cluster_attr_reconnect_delay_ms.attr, |
| 670 | NULL, |
| 671 | }; |
| 672 | static ssize_t o2nm_cluster_show(struct config_item *item, |
| 673 | struct configfs_attribute *attr, |
| 674 | char *page) |
| 675 | { |
| 676 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
| 677 | struct o2nm_cluster_attribute *o2nm_cluster_attr = |
| 678 | container_of(attr, struct o2nm_cluster_attribute, attr); |
| 679 | ssize_t ret = 0; |
| 680 | |
| 681 | if (o2nm_cluster_attr->show) |
| 682 | ret = o2nm_cluster_attr->show(cluster, page); |
| 683 | return ret; |
| 684 | } |
| 685 | |
| 686 | static ssize_t o2nm_cluster_store(struct config_item *item, |
| 687 | struct configfs_attribute *attr, |
| 688 | const char *page, size_t count) |
| 689 | { |
| 690 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
| 691 | struct o2nm_cluster_attribute *o2nm_cluster_attr = |
| 692 | container_of(attr, struct o2nm_cluster_attribute, attr); |
| 693 | ssize_t ret; |
| 694 | |
| 695 | if (o2nm_cluster_attr->store == NULL) { |
| 696 | ret = -EINVAL; |
| 697 | goto out; |
| 698 | } |
| 699 | |
| 700 | ret = o2nm_cluster_attr->store(cluster, page, count); |
| 701 | if (ret < count) |
| 702 | goto out; |
| 703 | out: |
| 704 | return ret; |
| 705 | } |
| 706 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 707 | static struct config_item *o2nm_node_group_make_item(struct config_group *group, |
| 708 | const char *name) |
| 709 | { |
| 710 | struct o2nm_node *node = NULL; |
| 711 | struct config_item *ret = NULL; |
| 712 | |
| 713 | if (strlen(name) > O2NM_MAX_NAME_LEN) |
| 714 | goto out; /* ENAMETOOLONG */ |
| 715 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 716 | node = kzalloc(sizeof(struct o2nm_node), GFP_KERNEL); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 717 | if (node == NULL) |
| 718 | goto out; /* ENOMEM */ |
| 719 | |
| 720 | strcpy(node->nd_name, name); /* use item.ci_namebuf instead? */ |
| 721 | config_item_init_type_name(&node->nd_item, name, &o2nm_node_type); |
| 722 | spin_lock_init(&node->nd_lock); |
| 723 | |
| 724 | ret = &node->nd_item; |
| 725 | |
| 726 | out: |
| 727 | if (ret == NULL) |
| 728 | kfree(node); |
| 729 | |
| 730 | return ret; |
| 731 | } |
| 732 | |
| 733 | static void o2nm_node_group_drop_item(struct config_group *group, |
| 734 | struct config_item *item) |
| 735 | { |
| 736 | struct o2nm_node *node = to_o2nm_node(item); |
| 737 | struct o2nm_cluster *cluster = to_o2nm_cluster(group->cg_item.ci_parent); |
| 738 | |
| 739 | o2net_disconnect_node(node); |
| 740 | |
| 741 | if (cluster->cl_has_local && |
| 742 | (cluster->cl_local_node == node->nd_num)) { |
| 743 | cluster->cl_has_local = 0; |
| 744 | cluster->cl_local_node = O2NM_INVALID_NODE_NUM; |
| 745 | o2net_stop_listening(node); |
| 746 | } |
| 747 | |
| 748 | /* XXX call into net to stop this node from trading messages */ |
| 749 | |
| 750 | write_lock(&cluster->cl_nodes_lock); |
| 751 | |
| 752 | /* XXX sloppy */ |
| 753 | if (node->nd_ipv4_address) |
| 754 | rb_erase(&node->nd_ip_node, &cluster->cl_node_ip_tree); |
| 755 | |
| 756 | /* nd_num might be 0 if the node number hasn't been set.. */ |
| 757 | if (cluster->cl_nodes[node->nd_num] == node) { |
| 758 | cluster->cl_nodes[node->nd_num] = NULL; |
| 759 | clear_bit(node->nd_num, cluster->cl_nodes_bitmap); |
| 760 | } |
| 761 | write_unlock(&cluster->cl_nodes_lock); |
| 762 | |
| 763 | config_item_put(item); |
| 764 | } |
| 765 | |
| 766 | static struct configfs_group_operations o2nm_node_group_group_ops = { |
| 767 | .make_item = o2nm_node_group_make_item, |
| 768 | .drop_item = o2nm_node_group_drop_item, |
| 769 | }; |
| 770 | |
| 771 | static struct config_item_type o2nm_node_group_type = { |
| 772 | .ct_group_ops = &o2nm_node_group_group_ops, |
| 773 | .ct_owner = THIS_MODULE, |
| 774 | }; |
| 775 | |
| 776 | /* cluster */ |
| 777 | |
| 778 | static void o2nm_cluster_release(struct config_item *item) |
| 779 | { |
| 780 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
| 781 | |
| 782 | kfree(cluster->cl_group.default_groups); |
| 783 | kfree(cluster); |
| 784 | } |
| 785 | |
| 786 | static struct configfs_item_operations o2nm_cluster_item_ops = { |
| 787 | .release = o2nm_cluster_release, |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 788 | .show_attribute = o2nm_cluster_show, |
| 789 | .store_attribute = o2nm_cluster_store, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 790 | }; |
| 791 | |
| 792 | static struct config_item_type o2nm_cluster_type = { |
| 793 | .ct_item_ops = &o2nm_cluster_item_ops, |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 794 | .ct_attrs = o2nm_cluster_attrs, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 795 | .ct_owner = THIS_MODULE, |
| 796 | }; |
| 797 | |
| 798 | /* cluster set */ |
| 799 | |
| 800 | struct o2nm_cluster_group { |
| 801 | struct configfs_subsystem cs_subsys; |
| 802 | /* some stuff? */ |
| 803 | }; |
| 804 | |
| 805 | #if 0 |
| 806 | static struct o2nm_cluster_group *to_o2nm_cluster_group(struct config_group *group) |
| 807 | { |
| 808 | return group ? |
| 809 | container_of(to_configfs_subsystem(group), struct o2nm_cluster_group, cs_subsys) |
| 810 | : NULL; |
| 811 | } |
| 812 | #endif |
| 813 | |
| 814 | static struct config_group *o2nm_cluster_group_make_group(struct config_group *group, |
| 815 | const char *name) |
| 816 | { |
| 817 | struct o2nm_cluster *cluster = NULL; |
| 818 | struct o2nm_node_group *ns = NULL; |
| 819 | struct config_group *o2hb_group = NULL, *ret = NULL; |
| 820 | void *defs = NULL; |
| 821 | |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 822 | /* this runs under the parent dir's i_mutex; there can be only |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 823 | * one caller in here at a time */ |
| 824 | if (o2nm_single_cluster) |
| 825 | goto out; /* ENOSPC */ |
| 826 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 827 | cluster = kzalloc(sizeof(struct o2nm_cluster), GFP_KERNEL); |
| 828 | ns = kzalloc(sizeof(struct o2nm_node_group), GFP_KERNEL); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 829 | defs = kcalloc(3, sizeof(struct config_group *), GFP_KERNEL); |
| 830 | o2hb_group = o2hb_alloc_hb_set(); |
| 831 | if (cluster == NULL || ns == NULL || o2hb_group == NULL || defs == NULL) |
| 832 | goto out; |
| 833 | |
| 834 | config_group_init_type_name(&cluster->cl_group, name, |
| 835 | &o2nm_cluster_type); |
| 836 | config_group_init_type_name(&ns->ns_group, "node", |
| 837 | &o2nm_node_group_type); |
| 838 | |
| 839 | cluster->cl_group.default_groups = defs; |
| 840 | cluster->cl_group.default_groups[0] = &ns->ns_group; |
| 841 | cluster->cl_group.default_groups[1] = o2hb_group; |
| 842 | cluster->cl_group.default_groups[2] = NULL; |
| 843 | rwlock_init(&cluster->cl_nodes_lock); |
| 844 | cluster->cl_node_ip_tree = RB_ROOT; |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 845 | cluster->cl_reconnect_delay_ms = O2NET_RECONNECT_DELAY_MS_DEFAULT; |
| 846 | cluster->cl_idle_timeout_ms = O2NET_IDLE_TIMEOUT_MS_DEFAULT; |
| 847 | cluster->cl_keepalive_delay_ms = O2NET_KEEPALIVE_DELAY_MS_DEFAULT; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 848 | |
| 849 | ret = &cluster->cl_group; |
| 850 | o2nm_single_cluster = cluster; |
| 851 | |
| 852 | out: |
| 853 | if (ret == NULL) { |
| 854 | kfree(cluster); |
| 855 | kfree(ns); |
| 856 | o2hb_free_hb_set(o2hb_group); |
| 857 | kfree(defs); |
| 858 | } |
| 859 | |
| 860 | return ret; |
| 861 | } |
| 862 | |
| 863 | static void o2nm_cluster_group_drop_item(struct config_group *group, struct config_item *item) |
| 864 | { |
| 865 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
| 866 | int i; |
| 867 | struct config_item *killme; |
| 868 | |
| 869 | BUG_ON(o2nm_single_cluster != cluster); |
| 870 | o2nm_single_cluster = NULL; |
| 871 | |
| 872 | for (i = 0; cluster->cl_group.default_groups[i]; i++) { |
| 873 | killme = &cluster->cl_group.default_groups[i]->cg_item; |
| 874 | cluster->cl_group.default_groups[i] = NULL; |
| 875 | config_item_put(killme); |
| 876 | } |
| 877 | |
| 878 | config_item_put(item); |
| 879 | } |
| 880 | |
| 881 | static struct configfs_group_operations o2nm_cluster_group_group_ops = { |
| 882 | .make_group = o2nm_cluster_group_make_group, |
| 883 | .drop_item = o2nm_cluster_group_drop_item, |
| 884 | }; |
| 885 | |
| 886 | static struct config_item_type o2nm_cluster_group_type = { |
| 887 | .ct_group_ops = &o2nm_cluster_group_group_ops, |
| 888 | .ct_owner = THIS_MODULE, |
| 889 | }; |
| 890 | |
| 891 | static struct o2nm_cluster_group o2nm_cluster_group = { |
| 892 | .cs_subsys = { |
| 893 | .su_group = { |
| 894 | .cg_item = { |
| 895 | .ci_namebuf = "cluster", |
| 896 | .ci_type = &o2nm_cluster_group_type, |
| 897 | }, |
| 898 | }, |
| 899 | }, |
| 900 | }; |
| 901 | |
Joel Becker | 1482942 | 2007-06-14 21:40:49 -0700 | [diff] [blame] | 902 | int o2nm_depend_item(struct config_item *item) |
| 903 | { |
| 904 | return configfs_depend_item(&o2nm_cluster_group.cs_subsys, item); |
| 905 | } |
| 906 | |
| 907 | void o2nm_undepend_item(struct config_item *item) |
| 908 | { |
| 909 | configfs_undepend_item(&o2nm_cluster_group.cs_subsys, item); |
| 910 | } |
| 911 | |
Joel Becker | 16c6a4f | 2007-06-19 11:34:03 -0700 | [diff] [blame] | 912 | int o2nm_depend_this_node(void) |
| 913 | { |
| 914 | int ret = 0; |
| 915 | struct o2nm_node *local_node; |
| 916 | |
| 917 | local_node = o2nm_get_node_by_num(o2nm_this_node()); |
| 918 | if (!local_node) { |
| 919 | ret = -EINVAL; |
| 920 | goto out; |
| 921 | } |
| 922 | |
| 923 | ret = o2nm_depend_item(&local_node->nd_item); |
| 924 | o2nm_node_put(local_node); |
| 925 | |
| 926 | out: |
| 927 | return ret; |
| 928 | } |
| 929 | |
| 930 | void o2nm_undepend_this_node(void) |
| 931 | { |
| 932 | struct o2nm_node *local_node; |
| 933 | |
| 934 | local_node = o2nm_get_node_by_num(o2nm_this_node()); |
| 935 | BUG_ON(!local_node); |
| 936 | |
| 937 | o2nm_undepend_item(&local_node->nd_item); |
| 938 | o2nm_node_put(local_node); |
| 939 | } |
| 940 | |
| 941 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 942 | static void __exit exit_o2nm(void) |
| 943 | { |
| 944 | if (ocfs2_table_header) |
| 945 | unregister_sysctl_table(ocfs2_table_header); |
| 946 | |
| 947 | /* XXX sync with hb callbacks and shut down hb? */ |
| 948 | o2net_unregister_hb_callbacks(); |
| 949 | configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys); |
| 950 | o2cb_sys_shutdown(); |
| 951 | |
| 952 | o2net_exit(); |
| 953 | } |
| 954 | |
| 955 | static int __init init_o2nm(void) |
| 956 | { |
| 957 | int ret = -1; |
| 958 | |
| 959 | cluster_print_version(); |
| 960 | |
| 961 | o2hb_init(); |
Sunil Mushran | 2309e9e | 2008-04-14 10:46:19 -0700 | [diff] [blame^] | 962 | |
| 963 | ret = o2net_init(); |
| 964 | if (ret) |
| 965 | goto out; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 966 | |
Eric W. Biederman | 0b4d414 | 2007-02-14 00:34:09 -0800 | [diff] [blame] | 967 | ocfs2_table_header = register_sysctl_table(ocfs2_root_table); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 968 | if (!ocfs2_table_header) { |
| 969 | printk(KERN_ERR "nodemanager: unable to register sysctl\n"); |
| 970 | ret = -ENOMEM; /* or something. */ |
Jeff Mahoney | 895928b | 2006-02-21 16:54:00 -0800 | [diff] [blame] | 971 | goto out_o2net; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 972 | } |
| 973 | |
| 974 | ret = o2net_register_hb_callbacks(); |
| 975 | if (ret) |
| 976 | goto out_sysctl; |
| 977 | |
| 978 | config_group_init(&o2nm_cluster_group.cs_subsys.su_group); |
Joel Becker | e6bd07a | 2007-07-06 23:33:17 -0700 | [diff] [blame] | 979 | mutex_init(&o2nm_cluster_group.cs_subsys.su_mutex); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 980 | ret = configfs_register_subsystem(&o2nm_cluster_group.cs_subsys); |
| 981 | if (ret) { |
| 982 | printk(KERN_ERR "nodemanager: Registration returned %d\n", ret); |
| 983 | goto out_callbacks; |
| 984 | } |
| 985 | |
| 986 | ret = o2cb_sys_init(); |
| 987 | if (!ret) |
| 988 | goto out; |
| 989 | |
| 990 | configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys); |
| 991 | out_callbacks: |
| 992 | o2net_unregister_hb_callbacks(); |
| 993 | out_sysctl: |
| 994 | unregister_sysctl_table(ocfs2_table_header); |
Jeff Mahoney | 895928b | 2006-02-21 16:54:00 -0800 | [diff] [blame] | 995 | out_o2net: |
| 996 | o2net_exit(); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 997 | out: |
| 998 | return ret; |
| 999 | } |
| 1000 | |
| 1001 | MODULE_AUTHOR("Oracle"); |
| 1002 | MODULE_LICENSE("GPL"); |
| 1003 | |
| 1004 | module_init(init_o2nm) |
| 1005 | module_exit(exit_o2nm) |