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tipc: remove zone publication list in name table

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As a consequence of the previous commit we nan now eliminate zone scope
related lists in the name table. We start with name_table::publ_list[3],
which can now be replaced with two lists, one for node scope publications
and one for cluster scope publications.

Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Maloy 2018-03-15 16:48:52 +01:00 committed by David S. Miller
parent 928df1880e
commit 64a52b26d5
4 changed files with 29 additions and 26 deletions
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5
net/tipc/core.h
View File

@ -131,6 +131,11 @@ static inline struct list_head *tipc_nodes(struct net *net)
return &tipc_net(net)->node_list;
}
static inline struct name_table *tipc_name_table(struct net *net)
{
return tipc_net(net)->nametbl;
}
static inline struct tipc_topsrv *tipc_topsrv(struct net *net)
{
return tipc_net(net)->topsrv;

37
net/tipc/name_distr.c
View File

@ -86,25 +86,25 @@ static struct sk_buff *named_prepare_buf(struct net *net, u32 type, u32 size,
*/
struct sk_buff *tipc_named_publish(struct net *net, struct publication *publ)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct sk_buff *buf;
struct name_table *nt = tipc_name_table(net);
struct distr_item *item;
struct sk_buff *skb;
list_add_tail_rcu(&publ->local_list,
&tn->nametbl->publ_list[publ->scope]);
if (publ->scope == TIPC_NODE_SCOPE)
if (publ->scope == TIPC_NODE_SCOPE) {
list_add_tail_rcu(&publ->local_list, &nt->node_scope);
return NULL;
}
list_add_tail_rcu(&publ->local_list, &nt->cluster_scope);
buf = named_prepare_buf(net, PUBLICATION, ITEM_SIZE, 0);
if (!buf) {
skb = named_prepare_buf(net, PUBLICATION, ITEM_SIZE, 0);
if (!skb) {
pr_warn("Publication distribution failure\n");
return NULL;
}
item = (struct distr_item *)msg_data(buf_msg(buf));
item = (struct distr_item *)msg_data(buf_msg(skb));
publ_to_item(item, publ);
return buf;
return skb;
}
/**
@ -184,16 +184,13 @@ static void named_distribute(struct net *net, struct sk_buff_head *list,
*/
void tipc_named_node_up(struct net *net, u32 dnode)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct name_table *nt = tipc_name_table(net);
struct sk_buff_head head;
__skb_queue_head_init(&head);
rcu_read_lock();
named_distribute(net, &head, dnode,
&tn->nametbl->publ_list[TIPC_CLUSTER_SCOPE]);
named_distribute(net, &head, dnode,
&tn->nametbl->publ_list[TIPC_ZONE_SCOPE]);
named_distribute(net, &head, dnode, &nt->cluster_scope);
rcu_read_unlock();
tipc_node_xmit(net, &head, dnode, 0);
@ -382,15 +379,15 @@ void tipc_named_rcv(struct net *net, struct sk_buff_head *inputq)
*/
void tipc_named_reinit(struct net *net)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct name_table *nt = tipc_name_table(net);
struct tipc_net *tn = tipc_net(net);
struct publication *publ;
int scope;
spin_lock_bh(&tn->nametbl_lock);
for (scope = TIPC_ZONE_SCOPE; scope <= TIPC_NODE_SCOPE; scope++)
list_for_each_entry_rcu(publ, &tn->nametbl->publ_list[scope],
local_list)
list_for_each_entry_rcu(publ, &nt->node_scope, local_list)
publ->node = tn->own_addr;
list_for_each_entry_rcu(publ, &nt->cluster_scope, local_list)
publ->node = tn->own_addr;
spin_unlock_bh(&tn->nametbl_lock);

5
net/tipc/name_table.c
View File

@ -878,9 +878,8 @@ int tipc_nametbl_init(struct net *net)
for (i = 0; i < TIPC_NAMETBL_SIZE; i++)
INIT_HLIST_HEAD(&tipc_nametbl->seq_hlist[i]);
INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_ZONE_SCOPE]);
INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_CLUSTER_SCOPE]);
INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_NODE_SCOPE]);
INIT_LIST_HEAD(&tipc_nametbl->node_scope);
INIT_LIST_HEAD(&tipc_nametbl->cluster_scope);
tn->nametbl = tipc_nametbl;
spin_lock_init(&tn->nametbl_lock);
return 0;

6
net/tipc/name_table.h
View File

@ -88,12 +88,14 @@ struct publication {
/**
* struct name_table - table containing all existing port name publications
* @seq_hlist: name sequence hash lists
* @publ_list: pulication lists
* @node_scope: all local publications with node scope
* @cluster_scope: all local publications with cluster scope
* @local_publ_count: number of publications issued by this node
*/
struct name_table {
struct hlist_head seq_hlist[TIPC_NAMETBL_SIZE];
struct list_head publ_list[TIPC_PUBL_SCOPE_NUM];
struct list_head node_scope;
struct list_head cluster_scope;
u32 local_publ_count;
};