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fs/dlm/config.c
21.5 KB
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// SPDX-License-Identifier: GPL-2.0-only |
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/****************************************************************************** ******************************************************************************* ** ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
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** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved. |
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** |
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** ******************************************************************************* ******************************************************************************/ #include <linux/kernel.h> |
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#include <linux/init.h> |
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#include <linux/configfs.h> |
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#include <linux/slab.h> |
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#include <linux/in.h> #include <linux/in6.h> |
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#include <linux/dlmconstants.h> |
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#include <net/ipv6.h> |
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#include <net/sock.h> #include "config.h" |
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#include "lowcomms.h" |
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/* * /config/dlm/<cluster>/spaces/<space>/nodes/<node>/nodeid * /config/dlm/<cluster>/spaces/<space>/nodes/<node>/weight * /config/dlm/<cluster>/comms/<comm>/nodeid * /config/dlm/<cluster>/comms/<comm>/local |
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* /config/dlm/<cluster>/comms/<comm>/addr (write only) * /config/dlm/<cluster>/comms/<comm>/addr_list (read only) |
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* The <cluster> level is useless, but I haven't figured out how to avoid it. */ static struct config_group *space_list; static struct config_group *comm_list; |
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static struct dlm_comm *local_comm; |
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static uint32_t dlm_comm_count; |
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|
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struct dlm_clusters; struct dlm_cluster; struct dlm_spaces; struct dlm_space; struct dlm_comms; struct dlm_comm; struct dlm_nodes; struct dlm_node; |
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static struct config_group *make_cluster(struct config_group *, const char *); |
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static void drop_cluster(struct config_group *, struct config_item *); static void release_cluster(struct config_item *); |
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static struct config_group *make_space(struct config_group *, const char *); |
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static void drop_space(struct config_group *, struct config_item *); static void release_space(struct config_item *); |
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static struct config_item *make_comm(struct config_group *, const char *); |
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static void drop_comm(struct config_group *, struct config_item *); static void release_comm(struct config_item *); |
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static struct config_item *make_node(struct config_group *, const char *); |
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static void drop_node(struct config_group *, struct config_item *); static void release_node(struct config_item *); |
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static struct configfs_attribute *comm_attrs[]; static struct configfs_attribute *node_attrs[]; |
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struct dlm_cluster { |
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struct config_group group; unsigned int cl_tcp_port; unsigned int cl_buffer_size; unsigned int cl_rsbtbl_size; |
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unsigned int cl_recover_timer; unsigned int cl_toss_secs; unsigned int cl_scan_secs; unsigned int cl_log_debug; |
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unsigned int cl_log_info; |
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unsigned int cl_protocol; |
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unsigned int cl_timewarn_cs; |
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unsigned int cl_waitwarn_us; |
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unsigned int cl_new_rsb_count; |
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unsigned int cl_recover_callbacks; char cl_cluster_name[DLM_LOCKSPACE_LEN]; |
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}; |
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static struct dlm_cluster *config_item_to_cluster(struct config_item *i) { return i ? container_of(to_config_group(i), struct dlm_cluster, group) : NULL; } |
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enum { CLUSTER_ATTR_TCP_PORT = 0, CLUSTER_ATTR_BUFFER_SIZE, CLUSTER_ATTR_RSBTBL_SIZE, |
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CLUSTER_ATTR_RECOVER_TIMER, CLUSTER_ATTR_TOSS_SECS, CLUSTER_ATTR_SCAN_SECS, CLUSTER_ATTR_LOG_DEBUG, |
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CLUSTER_ATTR_LOG_INFO, |
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CLUSTER_ATTR_PROTOCOL, |
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CLUSTER_ATTR_TIMEWARN_CS, |
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CLUSTER_ATTR_WAITWARN_US, |
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CLUSTER_ATTR_NEW_RSB_COUNT, |
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CLUSTER_ATTR_RECOVER_CALLBACKS, CLUSTER_ATTR_CLUSTER_NAME, |
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}; |
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static ssize_t cluster_cluster_name_show(struct config_item *item, char *buf) |
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{ |
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struct dlm_cluster *cl = config_item_to_cluster(item); |
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return sprintf(buf, "%s ", cl->cl_cluster_name); } |
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static ssize_t cluster_cluster_name_store(struct config_item *item, |
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const char *buf, size_t len) { |
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struct dlm_cluster *cl = config_item_to_cluster(item); |
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strlcpy(dlm_config.ci_cluster_name, buf, sizeof(dlm_config.ci_cluster_name)); strlcpy(cl->cl_cluster_name, buf, sizeof(cl->cl_cluster_name)); |
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return len; } |
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CONFIGFS_ATTR(cluster_, cluster_name); |
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static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field, |
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int *info_field, int check_zero, |
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const char *buf, size_t len) { unsigned int x; |
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int rc; |
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if (!capable(CAP_SYS_ADMIN)) |
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return -EPERM; |
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rc = kstrtouint(buf, 0, &x); if (rc) return rc; |
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if (check_zero && !x) return -EINVAL; *cl_field = x; *info_field = x; return len; } |
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#define CLUSTER_ATTR(name, check_zero) \ |
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static ssize_t cluster_##name##_store(struct config_item *item, \ const char *buf, size_t len) \ |
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{ \ |
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struct dlm_cluster *cl = config_item_to_cluster(item); \ |
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return cluster_set(cl, &cl->cl_##name, &dlm_config.ci_##name, \ check_zero, buf, len); \ } \ |
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static ssize_t cluster_##name##_show(struct config_item *item, char *buf) \ |
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{ \ |
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struct dlm_cluster *cl = config_item_to_cluster(item); \ |
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return snprintf(buf, PAGE_SIZE, "%u ", cl->cl_##name); \ } \ |
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CONFIGFS_ATTR(cluster_, name); |
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CLUSTER_ATTR(tcp_port, 1); CLUSTER_ATTR(buffer_size, 1); CLUSTER_ATTR(rsbtbl_size, 1); |
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CLUSTER_ATTR(recover_timer, 1); CLUSTER_ATTR(toss_secs, 1); CLUSTER_ATTR(scan_secs, 1); CLUSTER_ATTR(log_debug, 0); |
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CLUSTER_ATTR(log_info, 0); |
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CLUSTER_ATTR(protocol, 0); |
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CLUSTER_ATTR(timewarn_cs, 1); |
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CLUSTER_ATTR(waitwarn_us, 0); |
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CLUSTER_ATTR(new_rsb_count, 0); |
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CLUSTER_ATTR(recover_callbacks, 0); |
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static struct configfs_attribute *cluster_attrs[] = { |
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[CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port, [CLUSTER_ATTR_BUFFER_SIZE] = &cluster_attr_buffer_size, [CLUSTER_ATTR_RSBTBL_SIZE] = &cluster_attr_rsbtbl_size, [CLUSTER_ATTR_RECOVER_TIMER] = &cluster_attr_recover_timer, [CLUSTER_ATTR_TOSS_SECS] = &cluster_attr_toss_secs, [CLUSTER_ATTR_SCAN_SECS] = &cluster_attr_scan_secs, [CLUSTER_ATTR_LOG_DEBUG] = &cluster_attr_log_debug, |
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[CLUSTER_ATTR_LOG_INFO] = &cluster_attr_log_info, |
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[CLUSTER_ATTR_PROTOCOL] = &cluster_attr_protocol, [CLUSTER_ATTR_TIMEWARN_CS] = &cluster_attr_timewarn_cs, [CLUSTER_ATTR_WAITWARN_US] = &cluster_attr_waitwarn_us, [CLUSTER_ATTR_NEW_RSB_COUNT] = &cluster_attr_new_rsb_count, [CLUSTER_ATTR_RECOVER_CALLBACKS] = &cluster_attr_recover_callbacks, [CLUSTER_ATTR_CLUSTER_NAME] = &cluster_attr_cluster_name, |
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NULL, }; |
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enum { COMM_ATTR_NODEID = 0, COMM_ATTR_LOCAL, COMM_ATTR_ADDR, |
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COMM_ATTR_ADDR_LIST, |
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}; |
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enum { NODE_ATTR_NODEID = 0, NODE_ATTR_WEIGHT, }; |
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struct dlm_clusters { |
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struct configfs_subsystem subsys; }; |
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struct dlm_spaces { |
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struct config_group ss_group; }; |
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struct dlm_space { |
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struct config_group group; struct list_head members; |
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struct mutex members_lock; |
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int members_count; }; |
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struct dlm_comms { |
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struct config_group cs_group; }; |
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struct dlm_comm { |
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struct config_item item; |
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int seq; |
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int nodeid; int local; int addr_count; struct sockaddr_storage *addr[DLM_MAX_ADDR_COUNT]; }; |
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struct dlm_nodes { |
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struct config_group ns_group; }; |
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struct dlm_node { |
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struct config_item item; struct list_head list; /* space->members */ int nodeid; int weight; |
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int new; |
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int comm_seq; /* copy of cm->seq when nd->nodeid is set */ |
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}; static struct configfs_group_operations clusters_ops = { .make_group = make_cluster, .drop_item = drop_cluster, }; static struct configfs_item_operations cluster_ops = { .release = release_cluster, }; static struct configfs_group_operations spaces_ops = { .make_group = make_space, .drop_item = drop_space, }; static struct configfs_item_operations space_ops = { .release = release_space, }; static struct configfs_group_operations comms_ops = { .make_item = make_comm, .drop_item = drop_comm, }; static struct configfs_item_operations comm_ops = { .release = release_comm, |
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}; static struct configfs_group_operations nodes_ops = { .make_item = make_node, .drop_item = drop_node, }; static struct configfs_item_operations node_ops = { .release = release_node, |
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}; |
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static const struct config_item_type clusters_type = { |
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.ct_group_ops = &clusters_ops, .ct_owner = THIS_MODULE, }; |
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static const struct config_item_type cluster_type = { |
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.ct_item_ops = &cluster_ops, |
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.ct_attrs = cluster_attrs, |
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.ct_owner = THIS_MODULE, }; |
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static const struct config_item_type spaces_type = { |
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.ct_group_ops = &spaces_ops, .ct_owner = THIS_MODULE, }; |
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static const struct config_item_type space_type = { |
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.ct_item_ops = &space_ops, .ct_owner = THIS_MODULE, }; |
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static const struct config_item_type comms_type = { |
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.ct_group_ops = &comms_ops, .ct_owner = THIS_MODULE, }; |
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static const struct config_item_type comm_type = { |
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.ct_item_ops = &comm_ops, .ct_attrs = comm_attrs, .ct_owner = THIS_MODULE, }; |
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static const struct config_item_type nodes_type = { |
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.ct_group_ops = &nodes_ops, .ct_owner = THIS_MODULE, }; |
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static const struct config_item_type node_type = { |
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.ct_item_ops = &node_ops, .ct_attrs = node_attrs, .ct_owner = THIS_MODULE, }; |
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static struct dlm_space *config_item_to_space(struct config_item *i) |
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{ |
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return i ? container_of(to_config_group(i), struct dlm_space, group) : NULL; |
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} |
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static struct dlm_comm *config_item_to_comm(struct config_item *i) |
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{ |
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return i ? container_of(i, struct dlm_comm, item) : NULL; |
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} |
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static struct dlm_node *config_item_to_node(struct config_item *i) |
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{ |
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return i ? container_of(i, struct dlm_node, item) : NULL; |
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} |
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static struct config_group *make_cluster(struct config_group *g, const char *name) |
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{ |
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struct dlm_cluster *cl = NULL; struct dlm_spaces *sps = NULL; struct dlm_comms *cms = NULL; |
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cl = kzalloc(sizeof(struct dlm_cluster), GFP_NOFS); |
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sps = kzalloc(sizeof(struct dlm_spaces), GFP_NOFS); cms = kzalloc(sizeof(struct dlm_comms), GFP_NOFS); |
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if (!cl || !sps || !cms) |
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goto fail; config_group_init_type_name(&cl->group, name, &cluster_type); config_group_init_type_name(&sps->ss_group, "spaces", &spaces_type); config_group_init_type_name(&cms->cs_group, "comms", &comms_type); |
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configfs_add_default_group(&sps->ss_group, &cl->group); configfs_add_default_group(&cms->cs_group, &cl->group); |
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cl->cl_tcp_port = dlm_config.ci_tcp_port; cl->cl_buffer_size = dlm_config.ci_buffer_size; cl->cl_rsbtbl_size = dlm_config.ci_rsbtbl_size; |
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cl->cl_recover_timer = dlm_config.ci_recover_timer; cl->cl_toss_secs = dlm_config.ci_toss_secs; cl->cl_scan_secs = dlm_config.ci_scan_secs; cl->cl_log_debug = dlm_config.ci_log_debug; |
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cl->cl_log_info = dlm_config.ci_log_info; |
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cl->cl_protocol = dlm_config.ci_protocol; |
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cl->cl_timewarn_cs = dlm_config.ci_timewarn_cs; |
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cl->cl_waitwarn_us = dlm_config.ci_waitwarn_us; |
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cl->cl_new_rsb_count = dlm_config.ci_new_rsb_count; |
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cl->cl_recover_callbacks = dlm_config.ci_recover_callbacks; memcpy(cl->cl_cluster_name, dlm_config.ci_cluster_name, DLM_LOCKSPACE_LEN); |
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space_list = &sps->ss_group; comm_list = &cms->cs_group; |
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return &cl->group; |
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fail: kfree(cl); |
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kfree(sps); kfree(cms); |
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return ERR_PTR(-ENOMEM); |
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} static void drop_cluster(struct config_group *g, struct config_item *i) { |
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struct dlm_cluster *cl = config_item_to_cluster(i); |
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configfs_remove_default_groups(&cl->group); |
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space_list = NULL; comm_list = NULL; config_item_put(i); } static void release_cluster(struct config_item *i) { |
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struct dlm_cluster *cl = config_item_to_cluster(i); |
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kfree(cl); } |
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static struct config_group *make_space(struct config_group *g, const char *name) |
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{ |
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struct dlm_space *sp = NULL; struct dlm_nodes *nds = NULL; |
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sp = kzalloc(sizeof(struct dlm_space), GFP_NOFS); |
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nds = kzalloc(sizeof(struct dlm_nodes), GFP_NOFS); |
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if (!sp || !nds) |
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goto fail; config_group_init_type_name(&sp->group, name, &space_type); |
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config_group_init_type_name(&nds->ns_group, "nodes", &nodes_type); configfs_add_default_group(&nds->ns_group, &sp->group); |
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INIT_LIST_HEAD(&sp->members); |
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mutex_init(&sp->members_lock); |
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sp->members_count = 0; |
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return &sp->group; |
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fail: kfree(sp); |
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kfree(nds); |
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return ERR_PTR(-ENOMEM); |
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} static void drop_space(struct config_group *g, struct config_item *i) { |
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struct dlm_space *sp = config_item_to_space(i); |
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/* assert list_empty(&sp->members) */ |
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configfs_remove_default_groups(&sp->group); |
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config_item_put(i); } static void release_space(struct config_item *i) { |
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struct dlm_space *sp = config_item_to_space(i); |
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kfree(sp); } |
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static struct config_item *make_comm(struct config_group *g, const char *name) |
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{ |
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struct dlm_comm *cm; |
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cm = kzalloc(sizeof(struct dlm_comm), GFP_NOFS); |
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if (!cm) |
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return ERR_PTR(-ENOMEM); |
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config_item_init_type_name(&cm->item, name, &comm_type); |
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cm->seq = dlm_comm_count++; if (!cm->seq) cm->seq = dlm_comm_count++; |
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cm->nodeid = -1; cm->local = 0; cm->addr_count = 0; |
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return &cm->item; |
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} static void drop_comm(struct config_group *g, struct config_item *i) { |
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struct dlm_comm *cm = config_item_to_comm(i); |
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if (local_comm == cm) local_comm = NULL; |
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dlm_lowcomms_close(cm->nodeid); |
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|
445 446 447 448 449 450 451 |
while (cm->addr_count--) kfree(cm->addr[cm->addr_count]); config_item_put(i); } static void release_comm(struct config_item *i) { |
27eccf464
|
452 |
struct dlm_comm *cm = config_item_to_comm(i); |
e7fd41792
|
453 454 |
kfree(cm); } |
f89ab8619
|
455 |
static struct config_item *make_node(struct config_group *g, const char *name) |
e7fd41792
|
456 |
{ |
27eccf464
|
457 |
struct dlm_space *sp = config_item_to_space(g->cg_item.ci_parent); |
51409340d
|
458 |
struct dlm_node *nd; |
e7fd41792
|
459 |
|
573c24c4a
|
460 |
nd = kzalloc(sizeof(struct dlm_node), GFP_NOFS); |
e7fd41792
|
461 |
if (!nd) |
a6795e9eb
|
462 |
return ERR_PTR(-ENOMEM); |
e7fd41792
|
463 464 465 466 |
config_item_init_type_name(&nd->item, name, &node_type); nd->nodeid = -1; nd->weight = 1; /* default weight of 1 if none is set */ |
d44e0fc70
|
467 |
nd->new = 1; /* set to 0 once it's been read by dlm_nodeid_list() */ |
e7fd41792
|
468 |
|
901359256
|
469 |
mutex_lock(&sp->members_lock); |
e7fd41792
|
470 471 |
list_add(&nd->list, &sp->members); sp->members_count++; |
901359256
|
472 |
mutex_unlock(&sp->members_lock); |
e7fd41792
|
473 |
|
f89ab8619
|
474 |
return &nd->item; |
e7fd41792
|
475 476 477 478 |
} static void drop_node(struct config_group *g, struct config_item *i) { |
27eccf464
|
479 480 |
struct dlm_space *sp = config_item_to_space(g->cg_item.ci_parent); struct dlm_node *nd = config_item_to_node(i); |
e7fd41792
|
481 |
|
901359256
|
482 |
mutex_lock(&sp->members_lock); |
e7fd41792
|
483 484 |
list_del(&nd->list); sp->members_count--; |
901359256
|
485 |
mutex_unlock(&sp->members_lock); |
e7fd41792
|
486 487 488 489 490 491 |
config_item_put(i); } static void release_node(struct config_item *i) { |
27eccf464
|
492 |
struct dlm_node *nd = config_item_to_node(i); |
e7fd41792
|
493 494 |
kfree(nd); } |
51409340d
|
495 |
static struct dlm_clusters clusters_root = { |
e7fd41792
|
496 497 498 499 500 501 502 503 504 |
.subsys = { .su_group = { .cg_item = { .ci_namebuf = "dlm", .ci_type = &clusters_type, }, }, }, }; |
30727174b
|
505 |
int __init dlm_config_init(void) |
e7fd41792
|
506 507 |
{ config_group_init(&clusters_root.subsys.su_group); |
e6bd07aee
|
508 |
mutex_init(&clusters_root.subsys.su_mutex); |
e7fd41792
|
509 510 511 512 513 514 515 516 517 518 519 |
return configfs_register_subsystem(&clusters_root.subsys); } void dlm_config_exit(void) { configfs_unregister_subsystem(&clusters_root.subsys); } /* * Functions for user space to read/write attributes */ |
9ae0f367d
|
520 |
static ssize_t comm_nodeid_show(struct config_item *item, char *buf) |
d200778e1
|
521 |
{ |
9ae0f367d
|
522 523 |
return sprintf(buf, "%d ", config_item_to_comm(item)->nodeid); |
e7fd41792
|
524 |
} |
9ae0f367d
|
525 |
static ssize_t comm_nodeid_store(struct config_item *item, const char *buf, |
51409340d
|
526 |
size_t len) |
e7fd41792
|
527 |
{ |
9ae0f367d
|
528 |
int rc = kstrtoint(buf, 0, &config_item_to_comm(item)->nodeid); |
4f4c337fb
|
529 530 531 |
if (rc) return rc; |
e7fd41792
|
532 533 |
return len; } |
9ae0f367d
|
534 |
static ssize_t comm_local_show(struct config_item *item, char *buf) |
e7fd41792
|
535 |
{ |
9ae0f367d
|
536 537 |
return sprintf(buf, "%d ", config_item_to_comm(item)->local); |
e7fd41792
|
538 |
} |
9ae0f367d
|
539 |
static ssize_t comm_local_store(struct config_item *item, const char *buf, |
51409340d
|
540 |
size_t len) |
e7fd41792
|
541 |
{ |
9ae0f367d
|
542 |
struct dlm_comm *cm = config_item_to_comm(item); |
4f4c337fb
|
543 544 545 546 |
int rc = kstrtoint(buf, 0, &cm->local); if (rc) return rc; |
e7fd41792
|
547 548 549 550 |
if (cm->local && !local_comm) local_comm = cm; return len; } |
9ae0f367d
|
551 552 |
static ssize_t comm_addr_store(struct config_item *item, const char *buf, size_t len) |
e7fd41792
|
553 |
{ |
9ae0f367d
|
554 |
struct dlm_comm *cm = config_item_to_comm(item); |
e7fd41792
|
555 |
struct sockaddr_storage *addr; |
36b71a8bf
|
556 |
int rv; |
e7fd41792
|
557 558 559 560 561 562 |
if (len != sizeof(struct sockaddr_storage)) return -EINVAL; if (cm->addr_count >= DLM_MAX_ADDR_COUNT) return -ENOSPC; |
573c24c4a
|
563 |
addr = kzalloc(sizeof(*addr), GFP_NOFS); |
e7fd41792
|
564 565 566 567 |
if (!addr) return -ENOMEM; memcpy(addr, buf, len); |
36b71a8bf
|
568 569 570 571 572 573 |
rv = dlm_lowcomms_addr(cm->nodeid, addr, len); if (rv) { kfree(addr); return rv; } |
e7fd41792
|
574 575 576 |
cm->addr[cm->addr_count++] = addr; return len; } |
9ae0f367d
|
577 |
static ssize_t comm_addr_list_show(struct config_item *item, char *buf) |
55b3286d3
|
578 |
{ |
9ae0f367d
|
579 |
struct dlm_comm *cm = config_item_to_comm(item); |
55b3286d3
|
580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 |
ssize_t s; ssize_t allowance; int i; struct sockaddr_storage *addr; struct sockaddr_in *addr_in; struct sockaddr_in6 *addr_in6; /* Taken from ip6_addr_string() defined in lib/vsprintf.c */ char buf0[sizeof("AF_INET6 xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255 ")]; /* Derived from SIMPLE_ATTR_SIZE of fs/configfs/file.c */ allowance = 4096; buf[0] = '\0'; for (i = 0; i < cm->addr_count; i++) { addr = cm->addr[i]; switch(addr->ss_family) { case AF_INET: addr_in = (struct sockaddr_in *)addr; s = sprintf(buf0, "AF_INET %pI4 ", &addr_in->sin_addr.s_addr); break; case AF_INET6: addr_in6 = (struct sockaddr_in6 *)addr; s = sprintf(buf0, "AF_INET6 %pI6 ", &addr_in6->sin6_addr); break; default: s = sprintf(buf0, "%s ", "<UNKNOWN>"); break; } allowance -= s; if (allowance >= 0) strcat(buf, buf0); else { allowance += s; break; } } return 4096 - allowance; } |
9ae0f367d
|
625 626 627 628 |
CONFIGFS_ATTR(comm_, nodeid); CONFIGFS_ATTR(comm_, local); CONFIGFS_ATTR_WO(comm_, addr); CONFIGFS_ATTR_RO(comm_, addr_list); |
e7fd41792
|
629 |
|
9ae0f367d
|
630 631 632 633 634 635 636 |
static struct configfs_attribute *comm_attrs[] = { [COMM_ATTR_NODEID] = &comm_attr_nodeid, [COMM_ATTR_LOCAL] = &comm_attr_local, [COMM_ATTR_ADDR] = &comm_attr_addr, [COMM_ATTR_ADDR_LIST] = &comm_attr_addr_list, NULL, }; |
e7fd41792
|
637 |
|
9ae0f367d
|
638 |
static ssize_t node_nodeid_show(struct config_item *item, char *buf) |
e7fd41792
|
639 |
{ |
9ae0f367d
|
640 641 |
return sprintf(buf, "%d ", config_item_to_node(item)->nodeid); |
e7fd41792
|
642 |
} |
9ae0f367d
|
643 |
static ssize_t node_nodeid_store(struct config_item *item, const char *buf, |
51409340d
|
644 |
size_t len) |
e7fd41792
|
645 |
{ |
9ae0f367d
|
646 |
struct dlm_node *nd = config_item_to_node(item); |
60f98d183
|
647 |
uint32_t seq = 0; |
4f4c337fb
|
648 649 650 651 |
int rc = kstrtoint(buf, 0, &nd->nodeid); if (rc) return rc; |
60f98d183
|
652 653 |
dlm_comm_seq(nd->nodeid, &seq); nd->comm_seq = seq; |
e7fd41792
|
654 655 |
return len; } |
9ae0f367d
|
656 |
static ssize_t node_weight_show(struct config_item *item, char *buf) |
e7fd41792
|
657 |
{ |
9ae0f367d
|
658 659 |
return sprintf(buf, "%d ", config_item_to_node(item)->weight); |
e7fd41792
|
660 |
} |
9ae0f367d
|
661 |
static ssize_t node_weight_store(struct config_item *item, const char *buf, |
51409340d
|
662 |
size_t len) |
e7fd41792
|
663 |
{ |
9ae0f367d
|
664 |
int rc = kstrtoint(buf, 0, &config_item_to_node(item)->weight); |
4f4c337fb
|
665 666 667 |
if (rc) return rc; |
e7fd41792
|
668 669 |
return len; } |
9ae0f367d
|
670 671 672 673 674 675 676 677 |
CONFIGFS_ATTR(node_, nodeid); CONFIGFS_ATTR(node_, weight); static struct configfs_attribute *node_attrs[] = { [NODE_ATTR_NODEID] = &node_attr_nodeid, [NODE_ATTR_WEIGHT] = &node_attr_weight, NULL, }; |
e7fd41792
|
678 679 680 |
/* * Functions for the dlm to get the info that's been configured */ |
51409340d
|
681 |
static struct dlm_space *get_space(char *name) |
e7fd41792
|
682 |
{ |
3168b0780
|
683 |
struct config_item *i; |
e7fd41792
|
684 685 |
if (!space_list) return NULL; |
3168b0780
|
686 |
|
e6bd07aee
|
687 |
mutex_lock(&space_list->cg_subsys->su_mutex); |
3fe6c5ce1
|
688 |
i = config_group_find_item(space_list, name); |
e6bd07aee
|
689 |
mutex_unlock(&space_list->cg_subsys->su_mutex); |
3168b0780
|
690 |
|
27eccf464
|
691 |
return config_item_to_space(i); |
e7fd41792
|
692 |
} |
51409340d
|
693 |
static void put_space(struct dlm_space *sp) |
e7fd41792
|
694 695 696 |
{ config_item_put(&sp->group.cg_item); } |
36b71a8bf
|
697 |
static struct dlm_comm *get_comm(int nodeid) |
e7fd41792
|
698 699 |
{ struct config_item *i; |
51409340d
|
700 |
struct dlm_comm *cm = NULL; |
e7fd41792
|
701 702 703 704 |
int found = 0; if (!comm_list) return NULL; |
e6bd07aee
|
705 |
mutex_lock(&clusters_root.subsys.su_mutex); |
e7fd41792
|
706 707 |
list_for_each_entry(i, &comm_list->cg_children, ci_entry) { |
27eccf464
|
708 |
cm = config_item_to_comm(i); |
e7fd41792
|
709 |
|
36b71a8bf
|
710 711 712 713 714 |
if (cm->nodeid != nodeid) continue; found = 1; config_item_get(i); break; |
e7fd41792
|
715 |
} |
e6bd07aee
|
716 |
mutex_unlock(&clusters_root.subsys.su_mutex); |
e7fd41792
|
717 |
|
3168b0780
|
718 |
if (!found) |
e7fd41792
|
719 720 721 |
cm = NULL; return cm; } |
51409340d
|
722 |
static void put_comm(struct dlm_comm *cm) |
e7fd41792
|
723 724 725 726 727 |
{ config_item_put(&cm->item); } /* caller must free mem */ |
60f98d183
|
728 729 |
int dlm_config_nodes(char *lsname, struct dlm_config_node **nodes_out, int *count_out) |
e7fd41792
|
730 |
{ |
51409340d
|
731 732 |
struct dlm_space *sp; struct dlm_node *nd; |
60f98d183
|
733 734 |
struct dlm_config_node *nodes, *node; int rv, count; |
e7fd41792
|
735 736 737 738 |
sp = get_space(lsname); if (!sp) return -EEXIST; |
901359256
|
739 |
mutex_lock(&sp->members_lock); |
e7fd41792
|
740 |
if (!sp->members_count) { |
d44e0fc70
|
741 742 743 |
rv = -EINVAL; printk(KERN_ERR "dlm: zero members_count "); |
e7fd41792
|
744 745 |
goto out; } |
60f98d183
|
746 |
count = sp->members_count; |
d44e0fc70
|
747 |
|
60f98d183
|
748 749 |
nodes = kcalloc(count, sizeof(struct dlm_config_node), GFP_NOFS); if (!nodes) { |
e7fd41792
|
750 751 752 |
rv = -ENOMEM; goto out; } |
60f98d183
|
753 |
node = nodes; |
d44e0fc70
|
754 |
list_for_each_entry(nd, &sp->members, list) { |
60f98d183
|
755 756 757 758 759 |
node->nodeid = nd->nodeid; node->weight = nd->weight; node->new = nd->new; node->comm_seq = nd->comm_seq; node++; |
d44e0fc70
|
760 |
|
60f98d183
|
761 |
nd->new = 0; |
d44e0fc70
|
762 |
} |
e7fd41792
|
763 |
|
60f98d183
|
764 765 766 |
*count_out = count; *nodes_out = nodes; rv = 0; |
e7fd41792
|
767 |
out: |
901359256
|
768 |
mutex_unlock(&sp->members_lock); |
e7fd41792
|
769 770 771 |
put_space(sp); return rv; } |
60f98d183
|
772 |
int dlm_comm_seq(int nodeid, uint32_t *seq) |
e7fd41792
|
773 |
{ |
36b71a8bf
|
774 |
struct dlm_comm *cm = get_comm(nodeid); |
60f98d183
|
775 776 777 778 779 |
if (!cm) return -EEXIST; *seq = cm->seq; put_comm(cm); return 0; |
e7fd41792
|
780 |
} |
e7fd41792
|
781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 |
int dlm_our_nodeid(void) { return local_comm ? local_comm->nodeid : 0; } /* num 0 is first addr, num 1 is second addr */ int dlm_our_addr(struct sockaddr_storage *addr, int num) { if (!local_comm) return -1; if (num + 1 > local_comm->addr_count) return -1; memcpy(addr, local_comm->addr[num], sizeof(*addr)); return 0; } /* Config file defaults */ #define DEFAULT_TCP_PORT 21064 #define DEFAULT_BUFFER_SIZE 4096 |
e3853a90e
|
800 |
#define DEFAULT_RSBTBL_SIZE 1024 |
e7fd41792
|
801 802 803 |
#define DEFAULT_RECOVER_TIMER 5 #define DEFAULT_TOSS_SECS 10 #define DEFAULT_SCAN_SECS 5 |
99fc64874
|
804 |
#define DEFAULT_LOG_DEBUG 0 |
505ee5283
|
805 |
#define DEFAULT_LOG_INFO 1 |
6ed7257b4
|
806 |
#define DEFAULT_PROTOCOL 0 |
3ae1acf93
|
807 |
#define DEFAULT_TIMEWARN_CS 500 /* 5 sec = 500 centiseconds */ |
c6ff669ba
|
808 |
#define DEFAULT_WAITWARN_US 0 |
3881ac04e
|
809 |
#define DEFAULT_NEW_RSB_COUNT 128 |
60f98d183
|
810 811 |
#define DEFAULT_RECOVER_CALLBACKS 0 #define DEFAULT_CLUSTER_NAME "" |
e7fd41792
|
812 813 |
struct dlm_config_info dlm_config = { |
68c817a1c
|
814 815 816 |
.ci_tcp_port = DEFAULT_TCP_PORT, .ci_buffer_size = DEFAULT_BUFFER_SIZE, .ci_rsbtbl_size = DEFAULT_RSBTBL_SIZE, |
68c817a1c
|
817 818 |
.ci_recover_timer = DEFAULT_RECOVER_TIMER, .ci_toss_secs = DEFAULT_TOSS_SECS, |
99fc64874
|
819 |
.ci_scan_secs = DEFAULT_SCAN_SECS, |
6ed7257b4
|
820 |
.ci_log_debug = DEFAULT_LOG_DEBUG, |
505ee5283
|
821 |
.ci_log_info = DEFAULT_LOG_INFO, |
3ae1acf93
|
822 |
.ci_protocol = DEFAULT_PROTOCOL, |
c6ff669ba
|
823 |
.ci_timewarn_cs = DEFAULT_TIMEWARN_CS, |
3881ac04e
|
824 |
.ci_waitwarn_us = DEFAULT_WAITWARN_US, |
60f98d183
|
825 826 827 |
.ci_new_rsb_count = DEFAULT_NEW_RSB_COUNT, .ci_recover_callbacks = DEFAULT_RECOVER_CALLBACKS, .ci_cluster_name = DEFAULT_CLUSTER_NAME |
e7fd41792
|
828 |
}; |