Thomas Gleixner | 328970d | 2019-05-24 12:04:05 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 2 | /* -*- mode: c; c-basic-offset: 8; -*- |
| 3 | * vim: noexpandtab sw=8 ts=8 sts=0: |
| 4 | * |
| 5 | * Copyright (C) 2004, 2005 Oracle. All rights reserved. |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 6 | */ |
| 7 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 8 | #include <linux/slab.h> |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 9 | #include <linux/kernel.h> |
| 10 | #include <linux/module.h> |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 11 | #include <linux/configfs.h> |
| 12 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 13 | #include "tcp.h" |
| 14 | #include "nodemanager.h" |
| 15 | #include "heartbeat.h" |
| 16 | #include "masklog.h" |
| 17 | #include "sys.h" |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 18 | |
| 19 | /* for now we operate under the assertion that there can be only one |
| 20 | * cluster active at a time. Changing this will require trickling |
| 21 | * cluster references throughout where nodes are looked up */ |
Andrew Beekhof | 296b75e | 2006-12-04 14:04:53 +0100 | [diff] [blame] | 22 | struct o2nm_cluster *o2nm_single_cluster = NULL; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 23 | |
Colin Ian King | 480bd56 | 2018-08-17 15:44:31 -0700 | [diff] [blame] | 24 | static const char *o2nm_fence_method_desc[O2NM_FENCE_METHODS] = { |
| 25 | "reset", /* O2NM_FENCE_RESET */ |
| 26 | "panic", /* O2NM_FENCE_PANIC */ |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 27 | }; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 28 | |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 29 | static inline void o2nm_lock_subsystem(void); |
| 30 | static inline void o2nm_unlock_subsystem(void); |
| 31 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 32 | struct o2nm_node *o2nm_get_node_by_num(u8 node_num) |
| 33 | { |
| 34 | struct o2nm_node *node = NULL; |
| 35 | |
| 36 | if (node_num >= O2NM_MAX_NODES || o2nm_single_cluster == NULL) |
| 37 | goto out; |
| 38 | |
| 39 | read_lock(&o2nm_single_cluster->cl_nodes_lock); |
| 40 | node = o2nm_single_cluster->cl_nodes[node_num]; |
| 41 | if (node) |
| 42 | config_item_get(&node->nd_item); |
| 43 | read_unlock(&o2nm_single_cluster->cl_nodes_lock); |
| 44 | out: |
| 45 | return node; |
| 46 | } |
| 47 | EXPORT_SYMBOL_GPL(o2nm_get_node_by_num); |
| 48 | |
| 49 | int o2nm_configured_node_map(unsigned long *map, unsigned bytes) |
| 50 | { |
| 51 | struct o2nm_cluster *cluster = o2nm_single_cluster; |
| 52 | |
| 53 | BUG_ON(bytes < (sizeof(cluster->cl_nodes_bitmap))); |
| 54 | |
| 55 | if (cluster == NULL) |
| 56 | return -EINVAL; |
| 57 | |
| 58 | read_lock(&cluster->cl_nodes_lock); |
| 59 | memcpy(map, cluster->cl_nodes_bitmap, sizeof(cluster->cl_nodes_bitmap)); |
| 60 | read_unlock(&cluster->cl_nodes_lock); |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | EXPORT_SYMBOL_GPL(o2nm_configured_node_map); |
| 65 | |
| 66 | static struct o2nm_node *o2nm_node_ip_tree_lookup(struct o2nm_cluster *cluster, |
| 67 | __be32 ip_needle, |
| 68 | struct rb_node ***ret_p, |
| 69 | struct rb_node **ret_parent) |
| 70 | { |
| 71 | struct rb_node **p = &cluster->cl_node_ip_tree.rb_node; |
| 72 | struct rb_node *parent = NULL; |
| 73 | struct o2nm_node *node, *ret = NULL; |
| 74 | |
| 75 | while (*p) { |
Akinobu Mita | 79cd22d | 2006-10-12 14:29:33 +0900 | [diff] [blame] | 76 | int cmp; |
| 77 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 78 | parent = *p; |
| 79 | node = rb_entry(parent, struct o2nm_node, nd_ip_node); |
| 80 | |
Akinobu Mita | 79cd22d | 2006-10-12 14:29:33 +0900 | [diff] [blame] | 81 | cmp = memcmp(&ip_needle, &node->nd_ipv4_address, |
| 82 | sizeof(ip_needle)); |
| 83 | if (cmp < 0) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 84 | p = &(*p)->rb_left; |
Akinobu Mita | 79cd22d | 2006-10-12 14:29:33 +0900 | [diff] [blame] | 85 | else if (cmp > 0) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 86 | p = &(*p)->rb_right; |
| 87 | else { |
| 88 | ret = node; |
| 89 | break; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | if (ret_p != NULL) |
| 94 | *ret_p = p; |
| 95 | if (ret_parent != NULL) |
| 96 | *ret_parent = parent; |
| 97 | |
| 98 | return ret; |
| 99 | } |
| 100 | |
| 101 | struct o2nm_node *o2nm_get_node_by_ip(__be32 addr) |
| 102 | { |
| 103 | struct o2nm_node *node = NULL; |
| 104 | struct o2nm_cluster *cluster = o2nm_single_cluster; |
| 105 | |
| 106 | if (cluster == NULL) |
| 107 | goto out; |
| 108 | |
| 109 | read_lock(&cluster->cl_nodes_lock); |
| 110 | node = o2nm_node_ip_tree_lookup(cluster, addr, NULL, NULL); |
| 111 | if (node) |
| 112 | config_item_get(&node->nd_item); |
| 113 | read_unlock(&cluster->cl_nodes_lock); |
| 114 | |
| 115 | out: |
| 116 | return node; |
| 117 | } |
| 118 | EXPORT_SYMBOL_GPL(o2nm_get_node_by_ip); |
| 119 | |
| 120 | void o2nm_node_put(struct o2nm_node *node) |
| 121 | { |
| 122 | config_item_put(&node->nd_item); |
| 123 | } |
| 124 | EXPORT_SYMBOL_GPL(o2nm_node_put); |
| 125 | |
| 126 | void o2nm_node_get(struct o2nm_node *node) |
| 127 | { |
| 128 | config_item_get(&node->nd_item); |
| 129 | } |
| 130 | EXPORT_SYMBOL_GPL(o2nm_node_get); |
| 131 | |
| 132 | u8 o2nm_this_node(void) |
| 133 | { |
| 134 | u8 node_num = O2NM_MAX_NODES; |
| 135 | |
| 136 | if (o2nm_single_cluster && o2nm_single_cluster->cl_has_local) |
| 137 | node_num = o2nm_single_cluster->cl_local_node; |
| 138 | |
| 139 | return node_num; |
| 140 | } |
| 141 | EXPORT_SYMBOL_GPL(o2nm_this_node); |
| 142 | |
| 143 | /* node configfs bits */ |
| 144 | |
| 145 | static struct o2nm_cluster *to_o2nm_cluster(struct config_item *item) |
| 146 | { |
| 147 | return item ? |
| 148 | container_of(to_config_group(item), struct o2nm_cluster, |
| 149 | cl_group) |
| 150 | : NULL; |
| 151 | } |
| 152 | |
| 153 | static struct o2nm_node *to_o2nm_node(struct config_item *item) |
| 154 | { |
| 155 | return item ? container_of(item, struct o2nm_node, nd_item) : NULL; |
| 156 | } |
| 157 | |
| 158 | static void o2nm_node_release(struct config_item *item) |
| 159 | { |
| 160 | struct o2nm_node *node = to_o2nm_node(item); |
| 161 | kfree(node); |
| 162 | } |
| 163 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 164 | static ssize_t o2nm_node_num_show(struct config_item *item, char *page) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 165 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 166 | return sprintf(page, "%d\n", to_o2nm_node(item)->nd_num); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | static struct o2nm_cluster *to_o2nm_cluster_from_node(struct o2nm_node *node) |
| 170 | { |
| 171 | /* through the first node_set .parent |
| 172 | * mycluster/nodes/mynode == o2nm_cluster->o2nm_node_group->o2nm_node */ |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 173 | if (node->nd_item.ci_parent) |
| 174 | return to_o2nm_cluster(node->nd_item.ci_parent->ci_parent); |
| 175 | else |
| 176 | return NULL; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | enum { |
| 180 | O2NM_NODE_ATTR_NUM = 0, |
| 181 | O2NM_NODE_ATTR_PORT, |
| 182 | O2NM_NODE_ATTR_ADDRESS, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 183 | }; |
| 184 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 185 | static ssize_t o2nm_node_num_store(struct config_item *item, const char *page, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 186 | size_t count) |
| 187 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 188 | struct o2nm_node *node = to_o2nm_node(item); |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 189 | struct o2nm_cluster *cluster; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 190 | unsigned long tmp; |
| 191 | char *p = (char *)page; |
Christoph Hellwig | 13a83fc | 2015-10-03 15:32:57 +0200 | [diff] [blame] | 192 | int ret = 0; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 193 | |
| 194 | tmp = simple_strtoul(p, &p, 0); |
| 195 | if (!p || (*p && (*p != '\n'))) |
| 196 | return -EINVAL; |
| 197 | |
| 198 | if (tmp >= O2NM_MAX_NODES) |
| 199 | return -ERANGE; |
| 200 | |
| 201 | /* once we're in the cl_nodes tree networking can look us up by |
| 202 | * node number and try to use our address and port attributes |
| 203 | * to connect to this node.. make sure that they've been set |
| 204 | * before writing the node attribute? */ |
| 205 | if (!test_bit(O2NM_NODE_ATTR_ADDRESS, &node->nd_set_attributes) || |
| 206 | !test_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes)) |
| 207 | return -EINVAL; /* XXX */ |
| 208 | |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 209 | o2nm_lock_subsystem(); |
| 210 | cluster = to_o2nm_cluster_from_node(node); |
| 211 | if (!cluster) { |
| 212 | o2nm_unlock_subsystem(); |
| 213 | return -EINVAL; |
| 214 | } |
| 215 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 216 | write_lock(&cluster->cl_nodes_lock); |
| 217 | if (cluster->cl_nodes[tmp]) |
Christoph Hellwig | 13a83fc | 2015-10-03 15:32:57 +0200 | [diff] [blame] | 218 | ret = -EEXIST; |
| 219 | else if (test_and_set_bit(O2NM_NODE_ATTR_NUM, |
| 220 | &node->nd_set_attributes)) |
| 221 | ret = -EBUSY; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 222 | else { |
| 223 | cluster->cl_nodes[tmp] = node; |
| 224 | node->nd_num = tmp; |
| 225 | set_bit(tmp, cluster->cl_nodes_bitmap); |
| 226 | } |
| 227 | write_unlock(&cluster->cl_nodes_lock); |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 228 | o2nm_unlock_subsystem(); |
| 229 | |
Christoph Hellwig | 13a83fc | 2015-10-03 15:32:57 +0200 | [diff] [blame] | 230 | if (ret) |
| 231 | return ret; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 232 | |
| 233 | return count; |
| 234 | } |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 235 | static ssize_t o2nm_node_ipv4_port_show(struct config_item *item, char *page) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 236 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 237 | return sprintf(page, "%u\n", ntohs(to_o2nm_node(item)->nd_ipv4_port)); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 238 | } |
| 239 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 240 | static ssize_t o2nm_node_ipv4_port_store(struct config_item *item, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 241 | const char *page, size_t count) |
| 242 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 243 | struct o2nm_node *node = to_o2nm_node(item); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 244 | unsigned long tmp; |
| 245 | char *p = (char *)page; |
| 246 | |
| 247 | tmp = simple_strtoul(p, &p, 0); |
| 248 | if (!p || (*p && (*p != '\n'))) |
| 249 | return -EINVAL; |
| 250 | |
| 251 | if (tmp == 0) |
| 252 | return -EINVAL; |
| 253 | if (tmp >= (u16)-1) |
| 254 | return -ERANGE; |
| 255 | |
Christoph Hellwig | 13a83fc | 2015-10-03 15:32:57 +0200 | [diff] [blame] | 256 | if (test_and_set_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes)) |
| 257 | return -EBUSY; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 258 | node->nd_ipv4_port = htons(tmp); |
| 259 | |
| 260 | return count; |
| 261 | } |
| 262 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 263 | static ssize_t o2nm_node_ipv4_address_show(struct config_item *item, char *page) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 264 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 265 | return sprintf(page, "%pI4\n", &to_o2nm_node(item)->nd_ipv4_address); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 266 | } |
| 267 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 268 | static ssize_t o2nm_node_ipv4_address_store(struct config_item *item, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 269 | const char *page, |
| 270 | size_t count) |
| 271 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 272 | struct o2nm_node *node = to_o2nm_node(item); |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 273 | struct o2nm_cluster *cluster; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 274 | int ret, i; |
| 275 | struct rb_node **p, *parent; |
| 276 | unsigned int octets[4]; |
| 277 | __be32 ipv4_addr = 0; |
| 278 | |
| 279 | ret = sscanf(page, "%3u.%3u.%3u.%3u", &octets[3], &octets[2], |
| 280 | &octets[1], &octets[0]); |
| 281 | if (ret != 4) |
| 282 | return -EINVAL; |
| 283 | |
| 284 | for (i = 0; i < ARRAY_SIZE(octets); i++) { |
| 285 | if (octets[i] > 255) |
| 286 | return -ERANGE; |
| 287 | be32_add_cpu(&ipv4_addr, octets[i] << (i * 8)); |
| 288 | } |
| 289 | |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 290 | o2nm_lock_subsystem(); |
| 291 | cluster = to_o2nm_cluster_from_node(node); |
| 292 | if (!cluster) { |
| 293 | o2nm_unlock_subsystem(); |
| 294 | return -EINVAL; |
| 295 | } |
| 296 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 297 | ret = 0; |
| 298 | write_lock(&cluster->cl_nodes_lock); |
| 299 | if (o2nm_node_ip_tree_lookup(cluster, ipv4_addr, &p, &parent)) |
| 300 | ret = -EEXIST; |
Christoph Hellwig | 13a83fc | 2015-10-03 15:32:57 +0200 | [diff] [blame] | 301 | else if (test_and_set_bit(O2NM_NODE_ATTR_ADDRESS, |
| 302 | &node->nd_set_attributes)) |
| 303 | ret = -EBUSY; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 304 | else { |
| 305 | rb_link_node(&node->nd_ip_node, parent, p); |
| 306 | rb_insert_color(&node->nd_ip_node, &cluster->cl_node_ip_tree); |
| 307 | } |
| 308 | write_unlock(&cluster->cl_nodes_lock); |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 309 | o2nm_unlock_subsystem(); |
| 310 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 311 | if (ret) |
| 312 | return ret; |
| 313 | |
| 314 | memcpy(&node->nd_ipv4_address, &ipv4_addr, sizeof(ipv4_addr)); |
| 315 | |
| 316 | return count; |
| 317 | } |
| 318 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 319 | static ssize_t o2nm_node_local_show(struct config_item *item, char *page) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 320 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 321 | return sprintf(page, "%d\n", to_o2nm_node(item)->nd_local); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 322 | } |
| 323 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 324 | static ssize_t o2nm_node_local_store(struct config_item *item, const char *page, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 325 | size_t count) |
| 326 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 327 | struct o2nm_node *node = to_o2nm_node(item); |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 328 | struct o2nm_cluster *cluster; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 329 | unsigned long tmp; |
| 330 | char *p = (char *)page; |
| 331 | ssize_t ret; |
| 332 | |
| 333 | tmp = simple_strtoul(p, &p, 0); |
| 334 | if (!p || (*p && (*p != '\n'))) |
| 335 | return -EINVAL; |
| 336 | |
| 337 | tmp = !!tmp; /* boolean of whether this node wants to be local */ |
| 338 | |
| 339 | /* setting local turns on networking rx for now so we require having |
| 340 | * set everything else first */ |
| 341 | if (!test_bit(O2NM_NODE_ATTR_ADDRESS, &node->nd_set_attributes) || |
| 342 | !test_bit(O2NM_NODE_ATTR_NUM, &node->nd_set_attributes) || |
| 343 | !test_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes)) |
| 344 | return -EINVAL; /* XXX */ |
| 345 | |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 346 | o2nm_lock_subsystem(); |
| 347 | cluster = to_o2nm_cluster_from_node(node); |
| 348 | if (!cluster) { |
| 349 | ret = -EINVAL; |
| 350 | goto out; |
| 351 | } |
| 352 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 353 | /* the only failure case is trying to set a new local node |
| 354 | * when a different one is already set */ |
| 355 | if (tmp && tmp == cluster->cl_has_local && |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 356 | cluster->cl_local_node != node->nd_num) { |
| 357 | ret = -EBUSY; |
| 358 | goto out; |
| 359 | } |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 360 | |
| 361 | /* bring up the rx thread if we're setting the new local node. */ |
| 362 | if (tmp && !cluster->cl_has_local) { |
| 363 | ret = o2net_start_listening(node); |
| 364 | if (ret) |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 365 | goto out; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 366 | } |
| 367 | |
| 368 | if (!tmp && cluster->cl_has_local && |
| 369 | cluster->cl_local_node == node->nd_num) { |
| 370 | o2net_stop_listening(node); |
| 371 | cluster->cl_local_node = O2NM_INVALID_NODE_NUM; |
| 372 | } |
| 373 | |
| 374 | node->nd_local = tmp; |
| 375 | if (node->nd_local) { |
| 376 | cluster->cl_has_local = tmp; |
| 377 | cluster->cl_local_node = node->nd_num; |
| 378 | } |
| 379 | |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 380 | ret = count; |
| 381 | |
| 382 | out: |
| 383 | o2nm_unlock_subsystem(); |
| 384 | return ret; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 385 | } |
| 386 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 387 | CONFIGFS_ATTR(o2nm_node_, num); |
| 388 | CONFIGFS_ATTR(o2nm_node_, ipv4_port); |
| 389 | CONFIGFS_ATTR(o2nm_node_, ipv4_address); |
| 390 | CONFIGFS_ATTR(o2nm_node_, local); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 391 | |
| 392 | static struct configfs_attribute *o2nm_node_attrs[] = { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 393 | &o2nm_node_attr_num, |
| 394 | &o2nm_node_attr_ipv4_port, |
| 395 | &o2nm_node_attr_ipv4_address, |
| 396 | &o2nm_node_attr_local, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 397 | NULL, |
| 398 | }; |
| 399 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 400 | static struct configfs_item_operations o2nm_node_item_ops = { |
| 401 | .release = o2nm_node_release, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 402 | }; |
| 403 | |
Bhumika Goyal | 4843afe | 2017-10-16 17:18:44 +0200 | [diff] [blame] | 404 | static const struct config_item_type o2nm_node_type = { |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 405 | .ct_item_ops = &o2nm_node_item_ops, |
| 406 | .ct_attrs = o2nm_node_attrs, |
| 407 | .ct_owner = THIS_MODULE, |
| 408 | }; |
| 409 | |
| 410 | /* node set */ |
| 411 | |
| 412 | struct o2nm_node_group { |
| 413 | struct config_group ns_group; |
| 414 | /* some stuff? */ |
| 415 | }; |
| 416 | |
| 417 | #if 0 |
| 418 | static struct o2nm_node_group *to_o2nm_node_group(struct config_group *group) |
| 419 | { |
| 420 | return group ? |
| 421 | container_of(group, struct o2nm_node_group, ns_group) |
| 422 | : NULL; |
| 423 | } |
| 424 | #endif |
| 425 | |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 426 | static ssize_t o2nm_cluster_attr_write(const char *page, ssize_t count, |
| 427 | unsigned int *val) |
| 428 | { |
| 429 | unsigned long tmp; |
| 430 | char *p = (char *)page; |
| 431 | |
| 432 | tmp = simple_strtoul(p, &p, 0); |
| 433 | if (!p || (*p && (*p != '\n'))) |
| 434 | return -EINVAL; |
| 435 | |
| 436 | if (tmp == 0) |
| 437 | return -EINVAL; |
| 438 | if (tmp >= (u32)-1) |
| 439 | return -ERANGE; |
| 440 | |
| 441 | *val = tmp; |
| 442 | |
| 443 | return count; |
| 444 | } |
| 445 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 446 | static ssize_t o2nm_cluster_idle_timeout_ms_show(struct config_item *item, |
| 447 | char *page) |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 448 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 449 | return sprintf(page, "%u\n", to_o2nm_cluster(item)->cl_idle_timeout_ms); |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 450 | } |
| 451 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 452 | static ssize_t o2nm_cluster_idle_timeout_ms_store(struct config_item *item, |
| 453 | const char *page, size_t count) |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 454 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 455 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 456 | ssize_t ret; |
| 457 | unsigned int val; |
| 458 | |
| 459 | ret = o2nm_cluster_attr_write(page, count, &val); |
| 460 | |
| 461 | if (ret > 0) { |
Andrew Beekhof | 828ae6a | 2006-12-04 14:04:55 +0100 | [diff] [blame] | 462 | if (cluster->cl_idle_timeout_ms != val |
| 463 | && o2net_num_connected_peers()) { |
| 464 | mlog(ML_NOTICE, |
| 465 | "o2net: cannot change idle timeout after " |
| 466 | "the first peer has agreed to it." |
| 467 | " %d connected peers\n", |
| 468 | o2net_num_connected_peers()); |
| 469 | ret = -EINVAL; |
| 470 | } else if (val <= cluster->cl_keepalive_delay_ms) { |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 471 | mlog(ML_NOTICE, "o2net: idle timeout must be larger " |
| 472 | "than keepalive delay\n"); |
Andrew Beekhof | 828ae6a | 2006-12-04 14:04:55 +0100 | [diff] [blame] | 473 | ret = -EINVAL; |
| 474 | } else { |
| 475 | cluster->cl_idle_timeout_ms = val; |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 476 | } |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | return ret; |
| 480 | } |
| 481 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 482 | static ssize_t o2nm_cluster_keepalive_delay_ms_show( |
| 483 | struct config_item *item, char *page) |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 484 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 485 | return sprintf(page, "%u\n", |
| 486 | to_o2nm_cluster(item)->cl_keepalive_delay_ms); |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 487 | } |
| 488 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 489 | static ssize_t o2nm_cluster_keepalive_delay_ms_store( |
| 490 | struct config_item *item, const char *page, size_t count) |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 491 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 492 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 493 | ssize_t ret; |
| 494 | unsigned int val; |
| 495 | |
| 496 | ret = o2nm_cluster_attr_write(page, count, &val); |
| 497 | |
| 498 | if (ret > 0) { |
Andrew Beekhof | 828ae6a | 2006-12-04 14:04:55 +0100 | [diff] [blame] | 499 | if (cluster->cl_keepalive_delay_ms != val |
| 500 | && o2net_num_connected_peers()) { |
| 501 | mlog(ML_NOTICE, |
| 502 | "o2net: cannot change keepalive delay after" |
| 503 | " the first peer has agreed to it." |
| 504 | " %d connected peers\n", |
| 505 | o2net_num_connected_peers()); |
| 506 | ret = -EINVAL; |
| 507 | } else if (val >= cluster->cl_idle_timeout_ms) { |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 508 | mlog(ML_NOTICE, "o2net: keepalive delay must be " |
| 509 | "smaller than idle timeout\n"); |
Andrew Beekhof | 828ae6a | 2006-12-04 14:04:55 +0100 | [diff] [blame] | 510 | ret = -EINVAL; |
| 511 | } else { |
| 512 | cluster->cl_keepalive_delay_ms = val; |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 513 | } |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | return ret; |
| 517 | } |
| 518 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 519 | static ssize_t o2nm_cluster_reconnect_delay_ms_show( |
| 520 | struct config_item *item, char *page) |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 521 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 522 | return sprintf(page, "%u\n", |
| 523 | to_o2nm_cluster(item)->cl_reconnect_delay_ms); |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 524 | } |
| 525 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 526 | static ssize_t o2nm_cluster_reconnect_delay_ms_store( |
| 527 | struct config_item *item, const char *page, size_t count) |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 528 | { |
| 529 | return o2nm_cluster_attr_write(page, count, |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 530 | &to_o2nm_cluster(item)->cl_reconnect_delay_ms); |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 531 | } |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 532 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 533 | static ssize_t o2nm_cluster_fence_method_show( |
| 534 | struct config_item *item, char *page) |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 535 | { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 536 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 537 | ssize_t ret = 0; |
| 538 | |
| 539 | if (cluster) |
| 540 | ret = sprintf(page, "%s\n", |
| 541 | o2nm_fence_method_desc[cluster->cl_fence_method]); |
| 542 | return ret; |
| 543 | } |
| 544 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 545 | static ssize_t o2nm_cluster_fence_method_store( |
| 546 | struct config_item *item, const char *page, size_t count) |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 547 | { |
| 548 | unsigned int i; |
| 549 | |
| 550 | if (page[count - 1] != '\n') |
| 551 | goto bail; |
| 552 | |
| 553 | for (i = 0; i < O2NM_FENCE_METHODS; ++i) { |
| 554 | if (count != strlen(o2nm_fence_method_desc[i]) + 1) |
| 555 | continue; |
| 556 | if (strncasecmp(page, o2nm_fence_method_desc[i], count - 1)) |
| 557 | continue; |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 558 | if (to_o2nm_cluster(item)->cl_fence_method != i) { |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 559 | printk(KERN_INFO "ocfs2: Changing fence method to %s\n", |
| 560 | o2nm_fence_method_desc[i]); |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 561 | to_o2nm_cluster(item)->cl_fence_method = i; |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 562 | } |
| 563 | return count; |
| 564 | } |
| 565 | |
| 566 | bail: |
| 567 | return -EINVAL; |
| 568 | } |
| 569 | |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 570 | CONFIGFS_ATTR(o2nm_cluster_, idle_timeout_ms); |
| 571 | CONFIGFS_ATTR(o2nm_cluster_, keepalive_delay_ms); |
| 572 | CONFIGFS_ATTR(o2nm_cluster_, reconnect_delay_ms); |
| 573 | CONFIGFS_ATTR(o2nm_cluster_, fence_method); |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 574 | |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 575 | static struct configfs_attribute *o2nm_cluster_attrs[] = { |
Christoph Hellwig | 45b9977 | 2015-10-03 15:32:58 +0200 | [diff] [blame] | 576 | &o2nm_cluster_attr_idle_timeout_ms, |
| 577 | &o2nm_cluster_attr_keepalive_delay_ms, |
| 578 | &o2nm_cluster_attr_reconnect_delay_ms, |
| 579 | &o2nm_cluster_attr_fence_method, |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 580 | NULL, |
| 581 | }; |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 582 | |
Joel Becker | f89ab86 | 2008-07-17 14:53:48 -0700 | [diff] [blame] | 583 | static struct config_item *o2nm_node_group_make_item(struct config_group *group, |
| 584 | const char *name) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 585 | { |
| 586 | struct o2nm_node *node = NULL; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 587 | |
Joel Becker | f89ab86 | 2008-07-17 14:53:48 -0700 | [diff] [blame] | 588 | if (strlen(name) > O2NM_MAX_NAME_LEN) |
Joel Becker | a6795e9 | 2008-07-17 15:21:29 -0700 | [diff] [blame] | 589 | return ERR_PTR(-ENAMETOOLONG); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 590 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 591 | node = kzalloc(sizeof(struct o2nm_node), GFP_KERNEL); |
Joel Becker | f89ab86 | 2008-07-17 14:53:48 -0700 | [diff] [blame] | 592 | if (node == NULL) |
Joel Becker | a6795e9 | 2008-07-17 15:21:29 -0700 | [diff] [blame] | 593 | return ERR_PTR(-ENOMEM); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 594 | |
| 595 | strcpy(node->nd_name, name); /* use item.ci_namebuf instead? */ |
| 596 | config_item_init_type_name(&node->nd_item, name, &o2nm_node_type); |
| 597 | spin_lock_init(&node->nd_lock); |
| 598 | |
Sunil Mushran | 39a2985 | 2010-10-07 17:30:17 -0700 | [diff] [blame] | 599 | mlog(ML_CLUSTER, "o2nm: Registering node %s\n", name); |
| 600 | |
Joel Becker | a6795e9 | 2008-07-17 15:21:29 -0700 | [diff] [blame] | 601 | return &node->nd_item; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | static void o2nm_node_group_drop_item(struct config_group *group, |
| 605 | struct config_item *item) |
| 606 | { |
| 607 | struct o2nm_node *node = to_o2nm_node(item); |
| 608 | struct o2nm_cluster *cluster = to_o2nm_cluster(group->cg_item.ci_parent); |
| 609 | |
Jia Guo | cc725ef | 2019-03-05 15:41:41 -0800 | [diff] [blame] | 610 | if (cluster->cl_nodes[node->nd_num] == node) { |
| 611 | o2net_disconnect_node(node); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 612 | |
Jia Guo | cc725ef | 2019-03-05 15:41:41 -0800 | [diff] [blame] | 613 | if (cluster->cl_has_local && |
| 614 | (cluster->cl_local_node == node->nd_num)) { |
| 615 | cluster->cl_has_local = 0; |
| 616 | cluster->cl_local_node = O2NM_INVALID_NODE_NUM; |
| 617 | o2net_stop_listening(node); |
| 618 | } |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | /* XXX call into net to stop this node from trading messages */ |
| 622 | |
| 623 | write_lock(&cluster->cl_nodes_lock); |
| 624 | |
| 625 | /* XXX sloppy */ |
| 626 | if (node->nd_ipv4_address) |
| 627 | rb_erase(&node->nd_ip_node, &cluster->cl_node_ip_tree); |
| 628 | |
| 629 | /* nd_num might be 0 if the node number hasn't been set.. */ |
| 630 | if (cluster->cl_nodes[node->nd_num] == node) { |
| 631 | cluster->cl_nodes[node->nd_num] = NULL; |
| 632 | clear_bit(node->nd_num, cluster->cl_nodes_bitmap); |
| 633 | } |
| 634 | write_unlock(&cluster->cl_nodes_lock); |
| 635 | |
Sunil Mushran | 39a2985 | 2010-10-07 17:30:17 -0700 | [diff] [blame] | 636 | mlog(ML_CLUSTER, "o2nm: Unregistered node %s\n", |
| 637 | config_item_name(&node->nd_item)); |
| 638 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 639 | config_item_put(item); |
| 640 | } |
| 641 | |
| 642 | static struct configfs_group_operations o2nm_node_group_group_ops = { |
| 643 | .make_item = o2nm_node_group_make_item, |
| 644 | .drop_item = o2nm_node_group_drop_item, |
| 645 | }; |
| 646 | |
Bhumika Goyal | 4843afe | 2017-10-16 17:18:44 +0200 | [diff] [blame] | 647 | static const struct config_item_type o2nm_node_group_type = { |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 648 | .ct_group_ops = &o2nm_node_group_group_ops, |
| 649 | .ct_owner = THIS_MODULE, |
| 650 | }; |
| 651 | |
| 652 | /* cluster */ |
| 653 | |
| 654 | static void o2nm_cluster_release(struct config_item *item) |
| 655 | { |
| 656 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
| 657 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 658 | kfree(cluster); |
| 659 | } |
| 660 | |
| 661 | static struct configfs_item_operations o2nm_cluster_item_ops = { |
| 662 | .release = o2nm_cluster_release, |
| 663 | }; |
| 664 | |
Bhumika Goyal | 4843afe | 2017-10-16 17:18:44 +0200 | [diff] [blame] | 665 | static const struct config_item_type o2nm_cluster_type = { |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 666 | .ct_item_ops = &o2nm_cluster_item_ops, |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 667 | .ct_attrs = o2nm_cluster_attrs, |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 668 | .ct_owner = THIS_MODULE, |
| 669 | }; |
| 670 | |
| 671 | /* cluster set */ |
| 672 | |
| 673 | struct o2nm_cluster_group { |
| 674 | struct configfs_subsystem cs_subsys; |
| 675 | /* some stuff? */ |
| 676 | }; |
| 677 | |
| 678 | #if 0 |
| 679 | static struct o2nm_cluster_group *to_o2nm_cluster_group(struct config_group *group) |
| 680 | { |
| 681 | return group ? |
| 682 | container_of(to_configfs_subsystem(group), struct o2nm_cluster_group, cs_subsys) |
| 683 | : NULL; |
| 684 | } |
| 685 | #endif |
| 686 | |
Joel Becker | f89ab86 | 2008-07-17 14:53:48 -0700 | [diff] [blame] | 687 | static struct config_group *o2nm_cluster_group_make_group(struct config_group *group, |
| 688 | const char *name) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 689 | { |
| 690 | struct o2nm_cluster *cluster = NULL; |
| 691 | struct o2nm_node_group *ns = NULL; |
Joel Becker | f89ab86 | 2008-07-17 14:53:48 -0700 | [diff] [blame] | 692 | struct config_group *o2hb_group = NULL, *ret = NULL; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 693 | |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 694 | /* 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] | 695 | * one caller in here at a time */ |
Joel Becker | f89ab86 | 2008-07-17 14:53:48 -0700 | [diff] [blame] | 696 | if (o2nm_single_cluster) |
Joel Becker | a6795e9 | 2008-07-17 15:21:29 -0700 | [diff] [blame] | 697 | return ERR_PTR(-ENOSPC); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 698 | |
Robert P. J. Day | cd86128 | 2006-12-13 00:34:52 -0800 | [diff] [blame] | 699 | cluster = kzalloc(sizeof(struct o2nm_cluster), GFP_KERNEL); |
| 700 | ns = kzalloc(sizeof(struct o2nm_node_group), GFP_KERNEL); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 701 | o2hb_group = o2hb_alloc_hb_set(); |
Christoph Hellwig | 1ae1602 | 2016-02-26 11:02:14 +0100 | [diff] [blame] | 702 | if (cluster == NULL || ns == NULL || o2hb_group == NULL) |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 703 | goto out; |
| 704 | |
| 705 | config_group_init_type_name(&cluster->cl_group, name, |
| 706 | &o2nm_cluster_type); |
Christoph Hellwig | 1ae1602 | 2016-02-26 11:02:14 +0100 | [diff] [blame] | 707 | configfs_add_default_group(&ns->ns_group, &cluster->cl_group); |
| 708 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 709 | config_group_init_type_name(&ns->ns_group, "node", |
| 710 | &o2nm_node_group_type); |
Christoph Hellwig | 1ae1602 | 2016-02-26 11:02:14 +0100 | [diff] [blame] | 711 | configfs_add_default_group(o2hb_group, &cluster->cl_group); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 712 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 713 | rwlock_init(&cluster->cl_nodes_lock); |
| 714 | cluster->cl_node_ip_tree = RB_ROOT; |
Jeff Mahoney | b5dd803 | 2006-12-04 14:04:54 +0100 | [diff] [blame] | 715 | cluster->cl_reconnect_delay_ms = O2NET_RECONNECT_DELAY_MS_DEFAULT; |
| 716 | cluster->cl_idle_timeout_ms = O2NET_IDLE_TIMEOUT_MS_DEFAULT; |
| 717 | cluster->cl_keepalive_delay_ms = O2NET_KEEPALIVE_DELAY_MS_DEFAULT; |
Sunil Mushran | f6656d2 | 2009-11-17 16:29:19 -0800 | [diff] [blame] | 718 | cluster->cl_fence_method = O2NM_FENCE_RESET; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 719 | |
Joel Becker | f89ab86 | 2008-07-17 14:53:48 -0700 | [diff] [blame] | 720 | ret = &cluster->cl_group; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 721 | o2nm_single_cluster = cluster; |
| 722 | |
| 723 | out: |
Joel Becker | f89ab86 | 2008-07-17 14:53:48 -0700 | [diff] [blame] | 724 | if (ret == NULL) { |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 725 | kfree(cluster); |
| 726 | kfree(ns); |
| 727 | o2hb_free_hb_set(o2hb_group); |
Joel Becker | a6795e9 | 2008-07-17 15:21:29 -0700 | [diff] [blame] | 728 | ret = ERR_PTR(-ENOMEM); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 729 | } |
| 730 | |
| 731 | return ret; |
| 732 | } |
| 733 | |
| 734 | static void o2nm_cluster_group_drop_item(struct config_group *group, struct config_item *item) |
| 735 | { |
| 736 | struct o2nm_cluster *cluster = to_o2nm_cluster(item); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 737 | |
| 738 | BUG_ON(o2nm_single_cluster != cluster); |
| 739 | o2nm_single_cluster = NULL; |
| 740 | |
Christoph Hellwig | 1ae1602 | 2016-02-26 11:02:14 +0100 | [diff] [blame] | 741 | configfs_remove_default_groups(&cluster->cl_group); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 742 | config_item_put(item); |
| 743 | } |
| 744 | |
| 745 | static struct configfs_group_operations o2nm_cluster_group_group_ops = { |
| 746 | .make_group = o2nm_cluster_group_make_group, |
| 747 | .drop_item = o2nm_cluster_group_drop_item, |
| 748 | }; |
| 749 | |
Bhumika Goyal | 4843afe | 2017-10-16 17:18:44 +0200 | [diff] [blame] | 750 | static const struct config_item_type o2nm_cluster_group_type = { |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 751 | .ct_group_ops = &o2nm_cluster_group_group_ops, |
| 752 | .ct_owner = THIS_MODULE, |
| 753 | }; |
| 754 | |
| 755 | static struct o2nm_cluster_group o2nm_cluster_group = { |
| 756 | .cs_subsys = { |
| 757 | .su_group = { |
| 758 | .cg_item = { |
| 759 | .ci_namebuf = "cluster", |
| 760 | .ci_type = &o2nm_cluster_group_type, |
| 761 | }, |
| 762 | }, |
| 763 | }, |
| 764 | }; |
| 765 | |
alex chen | 853bc26 | 2017-11-15 17:31:48 -0800 | [diff] [blame] | 766 | static inline void o2nm_lock_subsystem(void) |
| 767 | { |
| 768 | mutex_lock(&o2nm_cluster_group.cs_subsys.su_mutex); |
| 769 | } |
| 770 | |
| 771 | static inline void o2nm_unlock_subsystem(void) |
| 772 | { |
| 773 | mutex_unlock(&o2nm_cluster_group.cs_subsys.su_mutex); |
| 774 | } |
| 775 | |
Joel Becker | 1482942 | 2007-06-14 21:40:49 -0700 | [diff] [blame] | 776 | int o2nm_depend_item(struct config_item *item) |
| 777 | { |
| 778 | return configfs_depend_item(&o2nm_cluster_group.cs_subsys, item); |
| 779 | } |
| 780 | |
| 781 | void o2nm_undepend_item(struct config_item *item) |
| 782 | { |
Krzysztof Opasiak | 9a9e341 | 2015-12-11 16:06:09 +0100 | [diff] [blame] | 783 | configfs_undepend_item(item); |
Joel Becker | 1482942 | 2007-06-14 21:40:49 -0700 | [diff] [blame] | 784 | } |
| 785 | |
Joel Becker | 16c6a4f | 2007-06-19 11:34:03 -0700 | [diff] [blame] | 786 | int o2nm_depend_this_node(void) |
| 787 | { |
| 788 | int ret = 0; |
| 789 | struct o2nm_node *local_node; |
| 790 | |
| 791 | local_node = o2nm_get_node_by_num(o2nm_this_node()); |
| 792 | if (!local_node) { |
| 793 | ret = -EINVAL; |
| 794 | goto out; |
| 795 | } |
| 796 | |
| 797 | ret = o2nm_depend_item(&local_node->nd_item); |
| 798 | o2nm_node_put(local_node); |
| 799 | |
| 800 | out: |
| 801 | return ret; |
| 802 | } |
| 803 | |
| 804 | void o2nm_undepend_this_node(void) |
| 805 | { |
| 806 | struct o2nm_node *local_node; |
| 807 | |
| 808 | local_node = o2nm_get_node_by_num(o2nm_this_node()); |
| 809 | BUG_ON(!local_node); |
| 810 | |
| 811 | o2nm_undepend_item(&local_node->nd_item); |
| 812 | o2nm_node_put(local_node); |
| 813 | } |
| 814 | |
| 815 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 816 | static void __exit exit_o2nm(void) |
| 817 | { |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 818 | /* XXX sync with hb callbacks and shut down hb? */ |
| 819 | o2net_unregister_hb_callbacks(); |
| 820 | configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys); |
| 821 | o2cb_sys_shutdown(); |
| 822 | |
| 823 | o2net_exit(); |
Sunil Mushran | 87d3d3f | 2008-12-17 14:17:42 -0800 | [diff] [blame] | 824 | o2hb_exit(); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | static int __init init_o2nm(void) |
| 828 | { |
| 829 | int ret = -1; |
| 830 | |
Greg Kroah-Hartman | e581595 | 2019-07-11 20:53:12 -0700 | [diff] [blame] | 831 | o2hb_init(); |
Sunil Mushran | 2309e9e | 2008-04-14 10:46:19 -0700 | [diff] [blame] | 832 | |
| 833 | ret = o2net_init(); |
| 834 | if (ret) |
Sunil Mushran | 87d3d3f | 2008-12-17 14:17:42 -0800 | [diff] [blame] | 835 | goto out_o2hb; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 836 | |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 837 | ret = o2net_register_hb_callbacks(); |
| 838 | if (ret) |
Joel Becker | 3878f11 | 2008-05-30 15:30:49 -0700 | [diff] [blame] | 839 | goto out_o2net; |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 840 | |
| 841 | config_group_init(&o2nm_cluster_group.cs_subsys.su_group); |
Joel Becker | e6bd07a | 2007-07-06 23:33:17 -0700 | [diff] [blame] | 842 | mutex_init(&o2nm_cluster_group.cs_subsys.su_mutex); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 843 | ret = configfs_register_subsystem(&o2nm_cluster_group.cs_subsys); |
| 844 | if (ret) { |
| 845 | printk(KERN_ERR "nodemanager: Registration returned %d\n", ret); |
| 846 | goto out_callbacks; |
| 847 | } |
| 848 | |
| 849 | ret = o2cb_sys_init(); |
| 850 | if (!ret) |
| 851 | goto out; |
| 852 | |
| 853 | configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys); |
| 854 | out_callbacks: |
| 855 | o2net_unregister_hb_callbacks(); |
Jeff Mahoney | 895928b | 2006-02-21 16:54:00 -0800 | [diff] [blame] | 856 | out_o2net: |
| 857 | o2net_exit(); |
Sunil Mushran | 87d3d3f | 2008-12-17 14:17:42 -0800 | [diff] [blame] | 858 | out_o2hb: |
| 859 | o2hb_exit(); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 860 | out: |
| 861 | return ret; |
| 862 | } |
| 863 | |
| 864 | MODULE_AUTHOR("Oracle"); |
| 865 | MODULE_LICENSE("GPL"); |
Goldwyn Rodrigues | ff8fb33 | 2014-01-21 15:48:20 -0800 | [diff] [blame] | 866 | MODULE_DESCRIPTION("OCFS2 cluster management"); |
Kurt Hackel | 0c83ed8 | 2005-12-15 14:31:23 -0800 | [diff] [blame] | 867 | |
| 868 | module_init(init_o2nm) |
| 869 | module_exit(exit_o2nm) |