/*
* net/tipc/name_distr.c: TIPC name distribution code
- *
- * Copyright (c) 2003-2005, Ericsson Research Canada
+ *
+ * Copyright (c) 2000-2006, Ericsson AB
* Copyright (c) 2005, Wind River Systems
- * Copyright (c) 2005-2006, Ericsson AB
* All rights reserved.
*
- * Redistribution and use in source and binary forms, with or without
+ * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * Neither the names of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
*
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "msg.h"
#include "name_distr.h"
-#undef DBG_OUTPUT
-#define DBG_OUTPUT NULL
-
#define ITEM_SIZE sizeof(struct distr_item)
/**
* @upper: name sequence upper bound
* @ref: publishing port reference
* @key: publication key
- *
+ *
* ===> All fields are stored in network byte order. <===
- *
+ *
* First 3 fields identify (name or) name sequence being published.
* Reference field uniquely identifies port that published name sequence.
* Key field uniquely identifies publication, in the event a port has
* multiple publications of the same name sequence.
- *
- * Note: There is no field that identifies the publishing node because it is
+ *
+ * Note: There is no field that identifies the publishing node because it is
* the same for all items contained within a publication message.
*/
struct distr_item {
- u32 type;
- u32 lower;
- u32 upper;
- u32 ref;
- u32 key;
+ __be32 type;
+ __be32 lower;
+ __be32 upper;
+ __be32 ref;
+ __be32 key;
};
/**
- * List of externally visible publications by this node --
+ * List of externally visible publications by this node --
* that is, all publications having scope > TIPC_NODE_SCOPE.
*/
static LIST_HEAD(publ_root);
-static u32 publ_cnt = 0;
+static u32 publ_cnt = 0;
/**
* publ_to_item - add publication info to a publication message
static struct sk_buff *named_prepare_buf(u32 type, u32 size, u32 dest)
{
- struct sk_buff *buf = buf_acquire(LONG_H_SIZE + size);
+ struct sk_buff *buf = buf_acquire(LONG_H_SIZE + size);
struct tipc_msg *msg;
if (buf != NULL) {
msg = buf_msg(buf);
- msg_init(msg, NAME_DISTRIBUTOR, type, TIPC_OK,
- LONG_H_SIZE, dest);
+ msg_init(msg, NAME_DISTRIBUTOR, type, LONG_H_SIZE, dest);
msg_set_size(msg, LONG_H_SIZE + size);
}
return buf;
}
/**
- * named_publish - tell other nodes about a new publication by this node
+ * tipc_named_publish - tell other nodes about a new publication by this node
*/
-void named_publish(struct publication *publ)
+void tipc_named_publish(struct publication *publ)
{
struct sk_buff *buf;
struct distr_item *item;
- list_add(&publ->local_list, &publ_root);
+ list_add_tail(&publ->local_list, &publ_root);
publ_cnt++;
buf = named_prepare_buf(PUBLICATION, ITEM_SIZE, 0);
if (!buf) {
- warn("Memory squeeze; failed to distribute publication\n");
+ warn("Publication distribution failure\n");
return;
}
item = (struct distr_item *)msg_data(buf_msg(buf));
publ_to_item(item, publ);
- dbg("named_withdraw: broadcasting publish msg\n");
- cluster_broadcast(buf);
+ dbg("tipc_named_withdraw: broadcasting publish msg\n");
+ tipc_cltr_broadcast(buf);
}
/**
- * named_withdraw - tell other nodes about a withdrawn publication by this node
+ * tipc_named_withdraw - tell other nodes about a withdrawn publication by this node
*/
-void named_withdraw(struct publication *publ)
+void tipc_named_withdraw(struct publication *publ)
{
struct sk_buff *buf;
struct distr_item *item;
buf = named_prepare_buf(WITHDRAWAL, ITEM_SIZE, 0);
if (!buf) {
- warn("Memory squeeze; failed to distribute withdrawal\n");
+ warn("Withdrawl distribution failure\n");
return;
}
item = (struct distr_item *)msg_data(buf_msg(buf));
publ_to_item(item, publ);
- dbg("named_withdraw: broadcasting withdraw msg\n");
- cluster_broadcast(buf);
+ dbg("tipc_named_withdraw: broadcasting withdraw msg\n");
+ tipc_cltr_broadcast(buf);
}
/**
- * named_node_up - tell specified node about all publications by this node
+ * tipc_named_node_up - tell specified node about all publications by this node
*/
-void named_node_up(unsigned long node)
+void tipc_named_node_up(unsigned long node)
{
struct publication *publ;
- struct distr_item *item = 0;
- struct sk_buff *buf = 0;
+ struct distr_item *item = NULL;
+ struct sk_buff *buf = NULL;
u32 left = 0;
u32 rest;
u32 max_item_buf;
- assert(in_own_cluster(node));
- read_lock_bh(&nametbl_lock);
+ read_lock_bh(&tipc_nametbl_lock);
max_item_buf = TIPC_MAX_USER_MSG_SIZE / ITEM_SIZE;
max_item_buf *= ITEM_SIZE;
rest = publ_cnt * ITEM_SIZE;
if (!buf) {
left = (rest <= max_item_buf) ? rest : max_item_buf;
rest -= left;
- buf = named_prepare_buf(PUBLICATION, left, node);
- if (buf == NULL) {
- warn("Memory Squeeze; could not send publication\n");
+ buf = named_prepare_buf(PUBLICATION, left, node);
+ if (!buf) {
+ warn("Bulk publication distribution failure\n");
goto exit;
}
item = (struct distr_item *)msg_data(buf_msg(buf));
left -= ITEM_SIZE;
if (!left) {
msg_set_link_selector(buf_msg(buf), node);
- dbg("named_node_up: sending publish msg to "
- "<%u.%u.%u>\n", tipc_zone(node),
+ dbg("tipc_named_node_up: sending publish msg to "
+ "<%u.%u.%u>\n", tipc_zone(node),
tipc_cluster(node), tipc_node(node));
- link_send(buf, node, node);
- buf = 0;
+ tipc_link_send(buf, node, node);
+ buf = NULL;
}
}
exit:
- read_unlock_bh(&nametbl_lock);
+ read_unlock_bh(&tipc_nametbl_lock);
}
/**
* node_is_down - remove publication associated with a failed node
- *
- * Invoked for each publication issued by a newly failed node.
+ *
+ * Invoked for each publication issued by a newly failed node.
* Removes publication structure from name table & deletes it.
* In rare cases the link may have come back up again when this
* function is called, and we have two items representing the same
static void node_is_down(struct publication *publ)
{
struct publication *p;
- write_lock_bh(&nametbl_lock);
- dbg("node_is_down: withdrawing %u, %u, %u\n",
+
+ write_lock_bh(&tipc_nametbl_lock);
+ dbg("node_is_down: withdrawing %u, %u, %u\n",
publ->type, publ->lower, publ->upper);
- publ->key += 1222345;
- p = nametbl_remove_publ(publ->type, publ->lower,
- publ->node, publ->ref, publ->key);
- assert(p == publ);
- write_unlock_bh(&nametbl_lock);
- if (publ)
- kfree(publ);
+ publ->key += 1222345;
+ p = tipc_nametbl_remove_publ(publ->type, publ->lower,
+ publ->node, publ->ref, publ->key);
+ write_unlock_bh(&tipc_nametbl_lock);
+
+ if (p != publ) {
+ err("Unable to remove publication from failed node\n"
+ "(type=%u, lower=%u, node=0x%x, ref=%u, key=%u)\n",
+ publ->type, publ->lower, publ->node, publ->ref, publ->key);
+ }
+
+ if (p) {
+ kfree(p);
+ }
}
/**
- * named_recv - process name table update message sent by another node
+ * tipc_named_recv - process name table update message sent by another node
*/
-void named_recv(struct sk_buff *buf)
+void tipc_named_recv(struct sk_buff *buf)
{
struct publication *publ;
struct tipc_msg *msg = buf_msg(buf);
struct distr_item *item = (struct distr_item *)msg_data(msg);
u32 count = msg_data_sz(msg) / ITEM_SIZE;
- write_lock_bh(&nametbl_lock);
+ write_lock_bh(&tipc_nametbl_lock);
while (count--) {
if (msg_type(msg) == PUBLICATION) {
- dbg("named_recv: got publication for %u, %u, %u\n",
+ dbg("tipc_named_recv: got publication for %u, %u, %u\n",
ntohl(item->type), ntohl(item->lower),
ntohl(item->upper));
- publ = nametbl_insert_publ(ntohl(item->type),
- ntohl(item->lower),
- ntohl(item->upper),
- TIPC_CLUSTER_SCOPE,
- msg_orignode(msg),
- ntohl(item->ref),
- ntohl(item->key));
+ publ = tipc_nametbl_insert_publ(ntohl(item->type),
+ ntohl(item->lower),
+ ntohl(item->upper),
+ TIPC_CLUSTER_SCOPE,
+ msg_orignode(msg),
+ ntohl(item->ref),
+ ntohl(item->key));
if (publ) {
- nodesub_subscribe(&publ->subscr,
- msg_orignode(msg),
- publ,
- (net_ev_handler)node_is_down);
+ tipc_nodesub_subscribe(&publ->subscr,
+ msg_orignode(msg),
+ publ,
+ (net_ev_handler)node_is_down);
}
} else if (msg_type(msg) == WITHDRAWAL) {
- dbg("named_recv: got withdrawl for %u, %u, %u\n",
+ dbg("tipc_named_recv: got withdrawl for %u, %u, %u\n",
ntohl(item->type), ntohl(item->lower),
ntohl(item->upper));
- publ = nametbl_remove_publ(ntohl(item->type),
- ntohl(item->lower),
- msg_orignode(msg),
- ntohl(item->ref),
- ntohl(item->key));
+ publ = tipc_nametbl_remove_publ(ntohl(item->type),
+ ntohl(item->lower),
+ msg_orignode(msg),
+ ntohl(item->ref),
+ ntohl(item->key));
if (publ) {
- nodesub_unsubscribe(&publ->subscr);
- kfree(publ);
+ tipc_nodesub_unsubscribe(&publ->subscr);
+ kfree(publ);
+ } else {
+ err("Unable to remove publication by node 0x%x\n"
+ "(type=%u, lower=%u, ref=%u, key=%u)\n",
+ msg_orignode(msg),
+ ntohl(item->type), ntohl(item->lower),
+ ntohl(item->ref), ntohl(item->key));
}
} else {
- warn("named_recv: unknown msg\n");
+ warn("Unrecognized name table message received\n");
}
item++;
}
- write_unlock_bh(&nametbl_lock);
+ write_unlock_bh(&tipc_nametbl_lock);
buf_discard(buf);
}
/**
- * named_reinit - re-initialize local publication list
- *
+ * tipc_named_reinit - re-initialize local publication list
+ *
* This routine is called whenever TIPC networking is (re)enabled.
* All existing publications by this node that have "cluster" or "zone" scope
* are updated to reflect the node's current network address.
* (If the node's address is unchanged, the update loop terminates immediately.)
*/
-void named_reinit(void)
+void tipc_named_reinit(void)
{
struct publication *publ;
- write_lock_bh(&nametbl_lock);
+ write_lock_bh(&tipc_nametbl_lock);
list_for_each_entry(publ, &publ_root, local_list) {
if (publ->node == tipc_own_addr)
break;
publ->node = tipc_own_addr;
}
- write_unlock_bh(&nametbl_lock);
+ write_unlock_bh(&tipc_nametbl_lock);
}
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