![Eric W. Biederman](/assets/img/avatar_default.png)
The semantic effect of insert_at_head is that it would allow new registered sysctl entries to override existing sysctl entries of the same name. Which is pain for caching and the proc interface never implemented. I have done an audit and discovered that none of the current users of register_sysctl care as (excpet for directories) they do not register duplicate sysctl entries. So this patch simply removes the support for overriding existing entries in the sys_sysctl interface since no one uses it or cares and it makes future enhancments harder. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Andi Kleen <ak@muc.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Corey Minyard <minyard@acm.org> Cc: Neil Brown <neilb@suse.de> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Jan Kara <jack@ucw.cz> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: David Chinner <dgc@sgi.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
964 lines
24 KiB
C
964 lines
24 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* Copyright (C) 2004, 2005 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/sysctl.h>
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#include <linux/configfs.h>
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#include "endian.h"
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#include "tcp.h"
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#include "nodemanager.h"
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#include "heartbeat.h"
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#include "masklog.h"
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#include "sys.h"
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#include "ver.h"
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/* for now we operate under the assertion that there can be only one
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* cluster active at a time. Changing this will require trickling
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* cluster references throughout where nodes are looked up */
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struct o2nm_cluster *o2nm_single_cluster = NULL;
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#define OCFS2_MAX_HB_CTL_PATH 256
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static char ocfs2_hb_ctl_path[OCFS2_MAX_HB_CTL_PATH] = "/sbin/ocfs2_hb_ctl";
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static ctl_table ocfs2_nm_table[] = {
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{
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.ctl_name = 1,
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.procname = "hb_ctl_path",
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.data = ocfs2_hb_ctl_path,
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.maxlen = OCFS2_MAX_HB_CTL_PATH,
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.mode = 0644,
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.proc_handler = &proc_dostring,
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.strategy = &sysctl_string,
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},
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{ .ctl_name = 0 }
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};
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static ctl_table ocfs2_mod_table[] = {
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{
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.ctl_name = FS_OCFS2_NM,
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.procname = "nm",
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.data = NULL,
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.maxlen = 0,
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.mode = 0555,
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.child = ocfs2_nm_table
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},
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{ .ctl_name = 0}
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};
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static ctl_table ocfs2_kern_table[] = {
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{
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.ctl_name = FS_OCFS2,
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.procname = "ocfs2",
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.data = NULL,
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.maxlen = 0,
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.mode = 0555,
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.child = ocfs2_mod_table
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},
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{ .ctl_name = 0}
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};
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static ctl_table ocfs2_root_table[] = {
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{
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.ctl_name = CTL_FS,
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.procname = "fs",
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.data = NULL,
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.maxlen = 0,
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.mode = 0555,
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.child = ocfs2_kern_table
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},
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{ .ctl_name = 0 }
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};
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static struct ctl_table_header *ocfs2_table_header = NULL;
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const char *o2nm_get_hb_ctl_path(void)
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{
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return ocfs2_hb_ctl_path;
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}
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EXPORT_SYMBOL_GPL(o2nm_get_hb_ctl_path);
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struct o2nm_node *o2nm_get_node_by_num(u8 node_num)
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{
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struct o2nm_node *node = NULL;
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if (node_num >= O2NM_MAX_NODES || o2nm_single_cluster == NULL)
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goto out;
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read_lock(&o2nm_single_cluster->cl_nodes_lock);
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node = o2nm_single_cluster->cl_nodes[node_num];
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if (node)
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config_item_get(&node->nd_item);
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read_unlock(&o2nm_single_cluster->cl_nodes_lock);
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out:
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return node;
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}
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EXPORT_SYMBOL_GPL(o2nm_get_node_by_num);
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int o2nm_configured_node_map(unsigned long *map, unsigned bytes)
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{
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struct o2nm_cluster *cluster = o2nm_single_cluster;
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BUG_ON(bytes < (sizeof(cluster->cl_nodes_bitmap)));
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if (cluster == NULL)
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return -EINVAL;
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read_lock(&cluster->cl_nodes_lock);
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memcpy(map, cluster->cl_nodes_bitmap, sizeof(cluster->cl_nodes_bitmap));
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read_unlock(&cluster->cl_nodes_lock);
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return 0;
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}
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EXPORT_SYMBOL_GPL(o2nm_configured_node_map);
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static struct o2nm_node *o2nm_node_ip_tree_lookup(struct o2nm_cluster *cluster,
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__be32 ip_needle,
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struct rb_node ***ret_p,
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struct rb_node **ret_parent)
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{
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struct rb_node **p = &cluster->cl_node_ip_tree.rb_node;
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struct rb_node *parent = NULL;
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struct o2nm_node *node, *ret = NULL;
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while (*p) {
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int cmp;
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parent = *p;
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node = rb_entry(parent, struct o2nm_node, nd_ip_node);
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cmp = memcmp(&ip_needle, &node->nd_ipv4_address,
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sizeof(ip_needle));
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if (cmp < 0)
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p = &(*p)->rb_left;
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else if (cmp > 0)
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p = &(*p)->rb_right;
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else {
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ret = node;
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break;
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}
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}
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if (ret_p != NULL)
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*ret_p = p;
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if (ret_parent != NULL)
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*ret_parent = parent;
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return ret;
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}
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struct o2nm_node *o2nm_get_node_by_ip(__be32 addr)
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{
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struct o2nm_node *node = NULL;
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struct o2nm_cluster *cluster = o2nm_single_cluster;
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if (cluster == NULL)
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goto out;
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read_lock(&cluster->cl_nodes_lock);
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node = o2nm_node_ip_tree_lookup(cluster, addr, NULL, NULL);
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if (node)
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config_item_get(&node->nd_item);
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read_unlock(&cluster->cl_nodes_lock);
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out:
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return node;
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}
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EXPORT_SYMBOL_GPL(o2nm_get_node_by_ip);
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void o2nm_node_put(struct o2nm_node *node)
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{
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config_item_put(&node->nd_item);
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}
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EXPORT_SYMBOL_GPL(o2nm_node_put);
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void o2nm_node_get(struct o2nm_node *node)
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{
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config_item_get(&node->nd_item);
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}
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EXPORT_SYMBOL_GPL(o2nm_node_get);
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u8 o2nm_this_node(void)
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{
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u8 node_num = O2NM_MAX_NODES;
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if (o2nm_single_cluster && o2nm_single_cluster->cl_has_local)
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node_num = o2nm_single_cluster->cl_local_node;
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return node_num;
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}
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EXPORT_SYMBOL_GPL(o2nm_this_node);
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/* node configfs bits */
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static struct o2nm_cluster *to_o2nm_cluster(struct config_item *item)
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{
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return item ?
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container_of(to_config_group(item), struct o2nm_cluster,
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cl_group)
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: NULL;
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}
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static struct o2nm_node *to_o2nm_node(struct config_item *item)
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{
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return item ? container_of(item, struct o2nm_node, nd_item) : NULL;
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}
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static void o2nm_node_release(struct config_item *item)
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{
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struct o2nm_node *node = to_o2nm_node(item);
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kfree(node);
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}
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static ssize_t o2nm_node_num_read(struct o2nm_node *node, char *page)
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{
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return sprintf(page, "%d\n", node->nd_num);
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}
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static struct o2nm_cluster *to_o2nm_cluster_from_node(struct o2nm_node *node)
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{
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/* through the first node_set .parent
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* mycluster/nodes/mynode == o2nm_cluster->o2nm_node_group->o2nm_node */
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return to_o2nm_cluster(node->nd_item.ci_parent->ci_parent);
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}
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enum {
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O2NM_NODE_ATTR_NUM = 0,
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O2NM_NODE_ATTR_PORT,
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O2NM_NODE_ATTR_ADDRESS,
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O2NM_NODE_ATTR_LOCAL,
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};
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static ssize_t o2nm_node_num_write(struct o2nm_node *node, const char *page,
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size_t count)
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{
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struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node);
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unsigned long tmp;
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char *p = (char *)page;
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tmp = simple_strtoul(p, &p, 0);
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if (!p || (*p && (*p != '\n')))
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return -EINVAL;
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if (tmp >= O2NM_MAX_NODES)
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return -ERANGE;
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/* once we're in the cl_nodes tree networking can look us up by
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* node number and try to use our address and port attributes
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* to connect to this node.. make sure that they've been set
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* before writing the node attribute? */
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if (!test_bit(O2NM_NODE_ATTR_ADDRESS, &node->nd_set_attributes) ||
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!test_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes))
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return -EINVAL; /* XXX */
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write_lock(&cluster->cl_nodes_lock);
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if (cluster->cl_nodes[tmp])
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p = NULL;
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else {
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cluster->cl_nodes[tmp] = node;
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node->nd_num = tmp;
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set_bit(tmp, cluster->cl_nodes_bitmap);
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}
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write_unlock(&cluster->cl_nodes_lock);
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if (p == NULL)
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return -EEXIST;
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return count;
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}
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static ssize_t o2nm_node_ipv4_port_read(struct o2nm_node *node, char *page)
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{
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return sprintf(page, "%u\n", ntohs(node->nd_ipv4_port));
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}
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static ssize_t o2nm_node_ipv4_port_write(struct o2nm_node *node,
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const char *page, size_t count)
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{
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unsigned long tmp;
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char *p = (char *)page;
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tmp = simple_strtoul(p, &p, 0);
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if (!p || (*p && (*p != '\n')))
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return -EINVAL;
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if (tmp == 0)
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return -EINVAL;
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if (tmp >= (u16)-1)
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return -ERANGE;
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node->nd_ipv4_port = htons(tmp);
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return count;
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}
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static ssize_t o2nm_node_ipv4_address_read(struct o2nm_node *node, char *page)
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{
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return sprintf(page, "%u.%u.%u.%u\n", NIPQUAD(node->nd_ipv4_address));
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}
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static ssize_t o2nm_node_ipv4_address_write(struct o2nm_node *node,
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const char *page,
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size_t count)
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{
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struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node);
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int ret, i;
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struct rb_node **p, *parent;
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unsigned int octets[4];
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__be32 ipv4_addr = 0;
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ret = sscanf(page, "%3u.%3u.%3u.%3u", &octets[3], &octets[2],
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&octets[1], &octets[0]);
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if (ret != 4)
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return -EINVAL;
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for (i = 0; i < ARRAY_SIZE(octets); i++) {
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if (octets[i] > 255)
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return -ERANGE;
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be32_add_cpu(&ipv4_addr, octets[i] << (i * 8));
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}
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ret = 0;
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write_lock(&cluster->cl_nodes_lock);
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if (o2nm_node_ip_tree_lookup(cluster, ipv4_addr, &p, &parent))
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ret = -EEXIST;
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else {
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rb_link_node(&node->nd_ip_node, parent, p);
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rb_insert_color(&node->nd_ip_node, &cluster->cl_node_ip_tree);
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}
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write_unlock(&cluster->cl_nodes_lock);
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if (ret)
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return ret;
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memcpy(&node->nd_ipv4_address, &ipv4_addr, sizeof(ipv4_addr));
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return count;
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}
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static ssize_t o2nm_node_local_read(struct o2nm_node *node, char *page)
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{
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return sprintf(page, "%d\n", node->nd_local);
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}
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static ssize_t o2nm_node_local_write(struct o2nm_node *node, const char *page,
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size_t count)
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{
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struct o2nm_cluster *cluster = to_o2nm_cluster_from_node(node);
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unsigned long tmp;
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char *p = (char *)page;
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ssize_t ret;
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tmp = simple_strtoul(p, &p, 0);
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if (!p || (*p && (*p != '\n')))
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return -EINVAL;
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tmp = !!tmp; /* boolean of whether this node wants to be local */
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/* setting local turns on networking rx for now so we require having
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* set everything else first */
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if (!test_bit(O2NM_NODE_ATTR_ADDRESS, &node->nd_set_attributes) ||
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!test_bit(O2NM_NODE_ATTR_NUM, &node->nd_set_attributes) ||
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!test_bit(O2NM_NODE_ATTR_PORT, &node->nd_set_attributes))
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return -EINVAL; /* XXX */
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/* the only failure case is trying to set a new local node
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* when a different one is already set */
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if (tmp && tmp == cluster->cl_has_local &&
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cluster->cl_local_node != node->nd_num)
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return -EBUSY;
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/* bring up the rx thread if we're setting the new local node. */
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if (tmp && !cluster->cl_has_local) {
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ret = o2net_start_listening(node);
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if (ret)
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return ret;
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}
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if (!tmp && cluster->cl_has_local &&
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cluster->cl_local_node == node->nd_num) {
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o2net_stop_listening(node);
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cluster->cl_local_node = O2NM_INVALID_NODE_NUM;
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}
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node->nd_local = tmp;
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if (node->nd_local) {
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cluster->cl_has_local = tmp;
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cluster->cl_local_node = node->nd_num;
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}
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return count;
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}
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struct o2nm_node_attribute {
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struct configfs_attribute attr;
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ssize_t (*show)(struct o2nm_node *, char *);
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ssize_t (*store)(struct o2nm_node *, const char *, size_t);
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};
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static struct o2nm_node_attribute o2nm_node_attr_num = {
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.attr = { .ca_owner = THIS_MODULE,
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.ca_name = "num",
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.ca_mode = S_IRUGO | S_IWUSR },
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.show = o2nm_node_num_read,
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.store = o2nm_node_num_write,
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};
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static struct o2nm_node_attribute o2nm_node_attr_ipv4_port = {
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.attr = { .ca_owner = THIS_MODULE,
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.ca_name = "ipv4_port",
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.ca_mode = S_IRUGO | S_IWUSR },
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.show = o2nm_node_ipv4_port_read,
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.store = o2nm_node_ipv4_port_write,
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};
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static struct o2nm_node_attribute o2nm_node_attr_ipv4_address = {
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.attr = { .ca_owner = THIS_MODULE,
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.ca_name = "ipv4_address",
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.ca_mode = S_IRUGO | S_IWUSR },
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.show = o2nm_node_ipv4_address_read,
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.store = o2nm_node_ipv4_address_write,
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};
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|
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static struct o2nm_node_attribute o2nm_node_attr_local = {
|
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.attr = { .ca_owner = THIS_MODULE,
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.ca_name = "local",
|
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.ca_mode = S_IRUGO | S_IWUSR },
|
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.show = o2nm_node_local_read,
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.store = o2nm_node_local_write,
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};
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|
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static struct configfs_attribute *o2nm_node_attrs[] = {
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[O2NM_NODE_ATTR_NUM] = &o2nm_node_attr_num.attr,
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[O2NM_NODE_ATTR_PORT] = &o2nm_node_attr_ipv4_port.attr,
|
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[O2NM_NODE_ATTR_ADDRESS] = &o2nm_node_attr_ipv4_address.attr,
|
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[O2NM_NODE_ATTR_LOCAL] = &o2nm_node_attr_local.attr,
|
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NULL,
|
|
};
|
|
|
|
static int o2nm_attr_index(struct configfs_attribute *attr)
|
|
{
|
|
int i;
|
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for (i = 0; i < ARRAY_SIZE(o2nm_node_attrs); i++) {
|
|
if (attr == o2nm_node_attrs[i])
|
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return i;
|
|
}
|
|
BUG();
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t o2nm_node_show(struct config_item *item,
|
|
struct configfs_attribute *attr,
|
|
char *page)
|
|
{
|
|
struct o2nm_node *node = to_o2nm_node(item);
|
|
struct o2nm_node_attribute *o2nm_node_attr =
|
|
container_of(attr, struct o2nm_node_attribute, attr);
|
|
ssize_t ret = 0;
|
|
|
|
if (o2nm_node_attr->show)
|
|
ret = o2nm_node_attr->show(node, page);
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t o2nm_node_store(struct config_item *item,
|
|
struct configfs_attribute *attr,
|
|
const char *page, size_t count)
|
|
{
|
|
struct o2nm_node *node = to_o2nm_node(item);
|
|
struct o2nm_node_attribute *o2nm_node_attr =
|
|
container_of(attr, struct o2nm_node_attribute, attr);
|
|
ssize_t ret;
|
|
int attr_index = o2nm_attr_index(attr);
|
|
|
|
if (o2nm_node_attr->store == NULL) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (test_bit(attr_index, &node->nd_set_attributes))
|
|
return -EBUSY;
|
|
|
|
ret = o2nm_node_attr->store(node, page, count);
|
|
if (ret < count)
|
|
goto out;
|
|
|
|
set_bit(attr_index, &node->nd_set_attributes);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static struct configfs_item_operations o2nm_node_item_ops = {
|
|
.release = o2nm_node_release,
|
|
.show_attribute = o2nm_node_show,
|
|
.store_attribute = o2nm_node_store,
|
|
};
|
|
|
|
static struct config_item_type o2nm_node_type = {
|
|
.ct_item_ops = &o2nm_node_item_ops,
|
|
.ct_attrs = o2nm_node_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* node set */
|
|
|
|
struct o2nm_node_group {
|
|
struct config_group ns_group;
|
|
/* some stuff? */
|
|
};
|
|
|
|
#if 0
|
|
static struct o2nm_node_group *to_o2nm_node_group(struct config_group *group)
|
|
{
|
|
return group ?
|
|
container_of(group, struct o2nm_node_group, ns_group)
|
|
: NULL;
|
|
}
|
|
#endif
|
|
|
|
struct o2nm_cluster_attribute {
|
|
struct configfs_attribute attr;
|
|
ssize_t (*show)(struct o2nm_cluster *, char *);
|
|
ssize_t (*store)(struct o2nm_cluster *, const char *, size_t);
|
|
};
|
|
|
|
static ssize_t o2nm_cluster_attr_write(const char *page, ssize_t count,
|
|
unsigned int *val)
|
|
{
|
|
unsigned long tmp;
|
|
char *p = (char *)page;
|
|
|
|
tmp = simple_strtoul(p, &p, 0);
|
|
if (!p || (*p && (*p != '\n')))
|
|
return -EINVAL;
|
|
|
|
if (tmp == 0)
|
|
return -EINVAL;
|
|
if (tmp >= (u32)-1)
|
|
return -ERANGE;
|
|
|
|
*val = tmp;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t o2nm_cluster_attr_idle_timeout_ms_read(
|
|
struct o2nm_cluster *cluster, char *page)
|
|
{
|
|
return sprintf(page, "%u\n", cluster->cl_idle_timeout_ms);
|
|
}
|
|
|
|
static ssize_t o2nm_cluster_attr_idle_timeout_ms_write(
|
|
struct o2nm_cluster *cluster, const char *page, size_t count)
|
|
{
|
|
ssize_t ret;
|
|
unsigned int val;
|
|
|
|
ret = o2nm_cluster_attr_write(page, count, &val);
|
|
|
|
if (ret > 0) {
|
|
if (cluster->cl_idle_timeout_ms != val
|
|
&& o2net_num_connected_peers()) {
|
|
mlog(ML_NOTICE,
|
|
"o2net: cannot change idle timeout after "
|
|
"the first peer has agreed to it."
|
|
" %d connected peers\n",
|
|
o2net_num_connected_peers());
|
|
ret = -EINVAL;
|
|
} else if (val <= cluster->cl_keepalive_delay_ms) {
|
|
mlog(ML_NOTICE, "o2net: idle timeout must be larger "
|
|
"than keepalive delay\n");
|
|
ret = -EINVAL;
|
|
} else {
|
|
cluster->cl_idle_timeout_ms = val;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t o2nm_cluster_attr_keepalive_delay_ms_read(
|
|
struct o2nm_cluster *cluster, char *page)
|
|
{
|
|
return sprintf(page, "%u\n", cluster->cl_keepalive_delay_ms);
|
|
}
|
|
|
|
static ssize_t o2nm_cluster_attr_keepalive_delay_ms_write(
|
|
struct o2nm_cluster *cluster, const char *page, size_t count)
|
|
{
|
|
ssize_t ret;
|
|
unsigned int val;
|
|
|
|
ret = o2nm_cluster_attr_write(page, count, &val);
|
|
|
|
if (ret > 0) {
|
|
if (cluster->cl_keepalive_delay_ms != val
|
|
&& o2net_num_connected_peers()) {
|
|
mlog(ML_NOTICE,
|
|
"o2net: cannot change keepalive delay after"
|
|
" the first peer has agreed to it."
|
|
" %d connected peers\n",
|
|
o2net_num_connected_peers());
|
|
ret = -EINVAL;
|
|
} else if (val >= cluster->cl_idle_timeout_ms) {
|
|
mlog(ML_NOTICE, "o2net: keepalive delay must be "
|
|
"smaller than idle timeout\n");
|
|
ret = -EINVAL;
|
|
} else {
|
|
cluster->cl_keepalive_delay_ms = val;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t o2nm_cluster_attr_reconnect_delay_ms_read(
|
|
struct o2nm_cluster *cluster, char *page)
|
|
{
|
|
return sprintf(page, "%u\n", cluster->cl_reconnect_delay_ms);
|
|
}
|
|
|
|
static ssize_t o2nm_cluster_attr_reconnect_delay_ms_write(
|
|
struct o2nm_cluster *cluster, const char *page, size_t count)
|
|
{
|
|
return o2nm_cluster_attr_write(page, count,
|
|
&cluster->cl_reconnect_delay_ms);
|
|
}
|
|
static struct o2nm_cluster_attribute o2nm_cluster_attr_idle_timeout_ms = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "idle_timeout_ms",
|
|
.ca_mode = S_IRUGO | S_IWUSR },
|
|
.show = o2nm_cluster_attr_idle_timeout_ms_read,
|
|
.store = o2nm_cluster_attr_idle_timeout_ms_write,
|
|
};
|
|
|
|
static struct o2nm_cluster_attribute o2nm_cluster_attr_keepalive_delay_ms = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "keepalive_delay_ms",
|
|
.ca_mode = S_IRUGO | S_IWUSR },
|
|
.show = o2nm_cluster_attr_keepalive_delay_ms_read,
|
|
.store = o2nm_cluster_attr_keepalive_delay_ms_write,
|
|
};
|
|
|
|
static struct o2nm_cluster_attribute o2nm_cluster_attr_reconnect_delay_ms = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "reconnect_delay_ms",
|
|
.ca_mode = S_IRUGO | S_IWUSR },
|
|
.show = o2nm_cluster_attr_reconnect_delay_ms_read,
|
|
.store = o2nm_cluster_attr_reconnect_delay_ms_write,
|
|
};
|
|
|
|
static struct configfs_attribute *o2nm_cluster_attrs[] = {
|
|
&o2nm_cluster_attr_idle_timeout_ms.attr,
|
|
&o2nm_cluster_attr_keepalive_delay_ms.attr,
|
|
&o2nm_cluster_attr_reconnect_delay_ms.attr,
|
|
NULL,
|
|
};
|
|
static ssize_t o2nm_cluster_show(struct config_item *item,
|
|
struct configfs_attribute *attr,
|
|
char *page)
|
|
{
|
|
struct o2nm_cluster *cluster = to_o2nm_cluster(item);
|
|
struct o2nm_cluster_attribute *o2nm_cluster_attr =
|
|
container_of(attr, struct o2nm_cluster_attribute, attr);
|
|
ssize_t ret = 0;
|
|
|
|
if (o2nm_cluster_attr->show)
|
|
ret = o2nm_cluster_attr->show(cluster, page);
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t o2nm_cluster_store(struct config_item *item,
|
|
struct configfs_attribute *attr,
|
|
const char *page, size_t count)
|
|
{
|
|
struct o2nm_cluster *cluster = to_o2nm_cluster(item);
|
|
struct o2nm_cluster_attribute *o2nm_cluster_attr =
|
|
container_of(attr, struct o2nm_cluster_attribute, attr);
|
|
ssize_t ret;
|
|
|
|
if (o2nm_cluster_attr->store == NULL) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ret = o2nm_cluster_attr->store(cluster, page, count);
|
|
if (ret < count)
|
|
goto out;
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static struct config_item *o2nm_node_group_make_item(struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct o2nm_node *node = NULL;
|
|
struct config_item *ret = NULL;
|
|
|
|
if (strlen(name) > O2NM_MAX_NAME_LEN)
|
|
goto out; /* ENAMETOOLONG */
|
|
|
|
node = kzalloc(sizeof(struct o2nm_node), GFP_KERNEL);
|
|
if (node == NULL)
|
|
goto out; /* ENOMEM */
|
|
|
|
strcpy(node->nd_name, name); /* use item.ci_namebuf instead? */
|
|
config_item_init_type_name(&node->nd_item, name, &o2nm_node_type);
|
|
spin_lock_init(&node->nd_lock);
|
|
|
|
ret = &node->nd_item;
|
|
|
|
out:
|
|
if (ret == NULL)
|
|
kfree(node);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void o2nm_node_group_drop_item(struct config_group *group,
|
|
struct config_item *item)
|
|
{
|
|
struct o2nm_node *node = to_o2nm_node(item);
|
|
struct o2nm_cluster *cluster = to_o2nm_cluster(group->cg_item.ci_parent);
|
|
|
|
o2net_disconnect_node(node);
|
|
|
|
if (cluster->cl_has_local &&
|
|
(cluster->cl_local_node == node->nd_num)) {
|
|
cluster->cl_has_local = 0;
|
|
cluster->cl_local_node = O2NM_INVALID_NODE_NUM;
|
|
o2net_stop_listening(node);
|
|
}
|
|
|
|
/* XXX call into net to stop this node from trading messages */
|
|
|
|
write_lock(&cluster->cl_nodes_lock);
|
|
|
|
/* XXX sloppy */
|
|
if (node->nd_ipv4_address)
|
|
rb_erase(&node->nd_ip_node, &cluster->cl_node_ip_tree);
|
|
|
|
/* nd_num might be 0 if the node number hasn't been set.. */
|
|
if (cluster->cl_nodes[node->nd_num] == node) {
|
|
cluster->cl_nodes[node->nd_num] = NULL;
|
|
clear_bit(node->nd_num, cluster->cl_nodes_bitmap);
|
|
}
|
|
write_unlock(&cluster->cl_nodes_lock);
|
|
|
|
config_item_put(item);
|
|
}
|
|
|
|
static struct configfs_group_operations o2nm_node_group_group_ops = {
|
|
.make_item = o2nm_node_group_make_item,
|
|
.drop_item = o2nm_node_group_drop_item,
|
|
};
|
|
|
|
static struct config_item_type o2nm_node_group_type = {
|
|
.ct_group_ops = &o2nm_node_group_group_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* cluster */
|
|
|
|
static void o2nm_cluster_release(struct config_item *item)
|
|
{
|
|
struct o2nm_cluster *cluster = to_o2nm_cluster(item);
|
|
|
|
kfree(cluster->cl_group.default_groups);
|
|
kfree(cluster);
|
|
}
|
|
|
|
static struct configfs_item_operations o2nm_cluster_item_ops = {
|
|
.release = o2nm_cluster_release,
|
|
.show_attribute = o2nm_cluster_show,
|
|
.store_attribute = o2nm_cluster_store,
|
|
};
|
|
|
|
static struct config_item_type o2nm_cluster_type = {
|
|
.ct_item_ops = &o2nm_cluster_item_ops,
|
|
.ct_attrs = o2nm_cluster_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* cluster set */
|
|
|
|
struct o2nm_cluster_group {
|
|
struct configfs_subsystem cs_subsys;
|
|
/* some stuff? */
|
|
};
|
|
|
|
#if 0
|
|
static struct o2nm_cluster_group *to_o2nm_cluster_group(struct config_group *group)
|
|
{
|
|
return group ?
|
|
container_of(to_configfs_subsystem(group), struct o2nm_cluster_group, cs_subsys)
|
|
: NULL;
|
|
}
|
|
#endif
|
|
|
|
static struct config_group *o2nm_cluster_group_make_group(struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct o2nm_cluster *cluster = NULL;
|
|
struct o2nm_node_group *ns = NULL;
|
|
struct config_group *o2hb_group = NULL, *ret = NULL;
|
|
void *defs = NULL;
|
|
|
|
/* this runs under the parent dir's i_mutex; there can be only
|
|
* one caller in here at a time */
|
|
if (o2nm_single_cluster)
|
|
goto out; /* ENOSPC */
|
|
|
|
cluster = kzalloc(sizeof(struct o2nm_cluster), GFP_KERNEL);
|
|
ns = kzalloc(sizeof(struct o2nm_node_group), GFP_KERNEL);
|
|
defs = kcalloc(3, sizeof(struct config_group *), GFP_KERNEL);
|
|
o2hb_group = o2hb_alloc_hb_set();
|
|
if (cluster == NULL || ns == NULL || o2hb_group == NULL || defs == NULL)
|
|
goto out;
|
|
|
|
config_group_init_type_name(&cluster->cl_group, name,
|
|
&o2nm_cluster_type);
|
|
config_group_init_type_name(&ns->ns_group, "node",
|
|
&o2nm_node_group_type);
|
|
|
|
cluster->cl_group.default_groups = defs;
|
|
cluster->cl_group.default_groups[0] = &ns->ns_group;
|
|
cluster->cl_group.default_groups[1] = o2hb_group;
|
|
cluster->cl_group.default_groups[2] = NULL;
|
|
rwlock_init(&cluster->cl_nodes_lock);
|
|
cluster->cl_node_ip_tree = RB_ROOT;
|
|
cluster->cl_reconnect_delay_ms = O2NET_RECONNECT_DELAY_MS_DEFAULT;
|
|
cluster->cl_idle_timeout_ms = O2NET_IDLE_TIMEOUT_MS_DEFAULT;
|
|
cluster->cl_keepalive_delay_ms = O2NET_KEEPALIVE_DELAY_MS_DEFAULT;
|
|
|
|
ret = &cluster->cl_group;
|
|
o2nm_single_cluster = cluster;
|
|
|
|
out:
|
|
if (ret == NULL) {
|
|
kfree(cluster);
|
|
kfree(ns);
|
|
o2hb_free_hb_set(o2hb_group);
|
|
kfree(defs);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void o2nm_cluster_group_drop_item(struct config_group *group, struct config_item *item)
|
|
{
|
|
struct o2nm_cluster *cluster = to_o2nm_cluster(item);
|
|
int i;
|
|
struct config_item *killme;
|
|
|
|
BUG_ON(o2nm_single_cluster != cluster);
|
|
o2nm_single_cluster = NULL;
|
|
|
|
for (i = 0; cluster->cl_group.default_groups[i]; i++) {
|
|
killme = &cluster->cl_group.default_groups[i]->cg_item;
|
|
cluster->cl_group.default_groups[i] = NULL;
|
|
config_item_put(killme);
|
|
}
|
|
|
|
config_item_put(item);
|
|
}
|
|
|
|
static struct configfs_group_operations o2nm_cluster_group_group_ops = {
|
|
.make_group = o2nm_cluster_group_make_group,
|
|
.drop_item = o2nm_cluster_group_drop_item,
|
|
};
|
|
|
|
static struct config_item_type o2nm_cluster_group_type = {
|
|
.ct_group_ops = &o2nm_cluster_group_group_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct o2nm_cluster_group o2nm_cluster_group = {
|
|
.cs_subsys = {
|
|
.su_group = {
|
|
.cg_item = {
|
|
.ci_namebuf = "cluster",
|
|
.ci_type = &o2nm_cluster_group_type,
|
|
},
|
|
},
|
|
},
|
|
};
|
|
|
|
static void __exit exit_o2nm(void)
|
|
{
|
|
if (ocfs2_table_header)
|
|
unregister_sysctl_table(ocfs2_table_header);
|
|
|
|
/* XXX sync with hb callbacks and shut down hb? */
|
|
o2net_unregister_hb_callbacks();
|
|
configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys);
|
|
o2cb_sys_shutdown();
|
|
|
|
o2net_exit();
|
|
}
|
|
|
|
static int __init init_o2nm(void)
|
|
{
|
|
int ret = -1;
|
|
|
|
cluster_print_version();
|
|
|
|
o2hb_init();
|
|
o2net_init();
|
|
|
|
ocfs2_table_header = register_sysctl_table(ocfs2_root_table);
|
|
if (!ocfs2_table_header) {
|
|
printk(KERN_ERR "nodemanager: unable to register sysctl\n");
|
|
ret = -ENOMEM; /* or something. */
|
|
goto out_o2net;
|
|
}
|
|
|
|
ret = o2net_register_hb_callbacks();
|
|
if (ret)
|
|
goto out_sysctl;
|
|
|
|
config_group_init(&o2nm_cluster_group.cs_subsys.su_group);
|
|
init_MUTEX(&o2nm_cluster_group.cs_subsys.su_sem);
|
|
ret = configfs_register_subsystem(&o2nm_cluster_group.cs_subsys);
|
|
if (ret) {
|
|
printk(KERN_ERR "nodemanager: Registration returned %d\n", ret);
|
|
goto out_callbacks;
|
|
}
|
|
|
|
ret = o2cb_sys_init();
|
|
if (!ret)
|
|
goto out;
|
|
|
|
configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys);
|
|
out_callbacks:
|
|
o2net_unregister_hb_callbacks();
|
|
out_sysctl:
|
|
unregister_sysctl_table(ocfs2_table_header);
|
|
out_o2net:
|
|
o2net_exit();
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
MODULE_AUTHOR("Oracle");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(init_o2nm)
|
|
module_exit(exit_o2nm)
|