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tipc: introduce publication lists struct 

There is currently a single list that is containing both cluster-scope and
zone-scope publications, and the list count is a separate free floating
variable.  Create a struct to bind the count to the list, and to pave
the way for factoring out the publications into zone/cluster/node scope.

The current "publ_root" most matches what will be the cluster scope
list, so it is named accordingly in this commit.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
This commit is contained in:
Allan Stephens 2012-04-17 17:57:52 -04:00 committed by Paul Gortmaker
parent 798ec84d45
commit 3f8375fee3
1 changed files with 17 additions and 10 deletions
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27
net/tipc/name_distr.c
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@ -68,12 +68,19 @@ struct distr_item {
};
/**
* List of externally visible publications by this node --
* that is, all publications having scope > TIPC_NODE_SCOPE.
* struct publ_list - list of publications made by this node
* @list: circular list of publications
* @list_size: number of entries in list
*/
struct publ_list {
struct list_head list;
u32 size;
};
static LIST_HEAD(publ_root);
static u32 publ_cnt;
static struct publ_list publ_cluster = {
.list = LIST_HEAD_INIT(publ_cluster.list),
.size = 0,
};
/**
* publ_to_item - add publication info to a publication message
@ -132,8 +139,8 @@ void tipc_named_publish(struct publication *publ)
struct sk_buff *buf;
struct distr_item *item;
list_add_tail(&publ->local_list, &publ_root);
publ_cnt++;
list_add_tail(&publ->local_list, &publ_cluster.list);
publ_cluster.size++;
buf = named_prepare_buf(PUBLICATION, ITEM_SIZE, 0);
if (!buf) {
@ -156,7 +163,7 @@ void tipc_named_withdraw(struct publication *publ)
struct distr_item *item;
list_del(&publ->local_list);
publ_cnt--;
publ_cluster.size--;
buf = named_prepare_buf(WITHDRAWAL, ITEM_SIZE, 0);
if (!buf) {
@ -207,9 +214,9 @@ void tipc_named_node_up(unsigned long nodearg)
INIT_LIST_HEAD(&message_list);
read_lock_bh(&tipc_nametbl_lock);
rest = publ_cnt * ITEM_SIZE;
rest = publ_cluster.size * ITEM_SIZE;
list_for_each_entry(publ, &publ_root, local_list) {
list_for_each_entry(publ, &publ_cluster.list, local_list) {
if (!buf) {
left = (rest <= max_item_buf) ? rest : max_item_buf;
rest -= left;
@ -329,7 +336,7 @@ void tipc_named_reinit(void)
write_lock_bh(&tipc_nametbl_lock);
list_for_each_entry(publ, &publ_root, local_list)
list_for_each_entry(publ, &publ_cluster.list, local_list)
publ->node = tipc_own_addr;
write_unlock_bh(&tipc_nametbl_lock);