tipc: remove zone publication list in name table

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>

4 files changed, 29 insertions, 26 deletions

diff --git a/net/tipc/core.h b/net/tipc/core.h
index ff8b071654f5..347f850dc872 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -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;
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index 23f8899e0f8c..11ce20505550 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -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);
@@ -382,16 +379,16 @@ 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)
-                        publ->node = tn->own_addr;
+        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);
 }
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 6772390fcb00..1a3a327018c5 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -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;
diff --git a/net/tipc/name_table.h b/net/tipc/name_table.h
index 17652602d5e2..47f72cddfb39 100644
--- a/net/tipc/name_table.h
+++ b/net/tipc/name_table.h
@@ -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;
 };