From a909804f7c6cb83b7365ed23e9fd4c1267ee9ef0 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Tue, 17 Apr 2012 17:57:52 -0400 Subject: [PATCH] tipc: Separate cluster-scope and zone-scope names into distinct lists Utilizes distinct lists to track zone-scope and cluster-scope names published by a node. For now, TIPC continues to process the entries in both lists in the same way; however, an upcoming patch will utilize the existence of the lists to prevent the sending of cluster-scope names to nodes that are not part of the local cluster. To achieve this, an array of publication lists is introduced, so that they can be iterated over and accessed via publ->scope as an index where convenient. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker --- net/tipc/name_distr.c | 31 ++++++++++++++++++++++++++----- 1 file changed, 26 insertions(+), 5 deletions(-) diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c index 3be0eb9..8751ea5 100644 --- a/net/tipc/name_distr.c +++ b/net/tipc/name_distr.c @@ -77,11 +77,29 @@ struct publ_list { u32 size; }; +static struct publ_list publ_zone = { + .list = LIST_HEAD_INIT(publ_zone.list), + .size = 0, +}; + static struct publ_list publ_cluster = { .list = LIST_HEAD_INIT(publ_cluster.list), .size = 0, }; +static struct publ_list publ_node = { + .list = LIST_HEAD_INIT(publ_node.list), + .size = 0, +}; + +static struct publ_list *publ_lists[] = { + NULL, + &publ_zone, /* publ_lists[TIPC_ZONE_SCOPE] */ + &publ_cluster, /* publ_lists[TIPC_CLUSTER_SCOPE] */ + &publ_node /* publ_lists[TIPC_NODE_SCOPE] */ +}; + + /** * publ_to_item - add publication info to a publication message */ @@ -139,8 +157,8 @@ void tipc_named_publish(struct publication *publ) struct sk_buff *buf; struct distr_item *item; - list_add_tail(&publ->local_list, &publ_cluster.list); - publ_cluster.size++; + list_add_tail(&publ->local_list, &publ_lists[publ->scope]->list); + publ_lists[publ->scope]->size++; buf = named_prepare_buf(PUBLICATION, ITEM_SIZE, 0); if (!buf) { @@ -163,7 +181,7 @@ void tipc_named_withdraw(struct publication *publ) struct distr_item *item; list_del(&publ->local_list); - publ_cluster.size--; + publ_lists[publ->scope]->size--; buf = named_prepare_buf(WITHDRAWAL, ITEM_SIZE, 0); if (!buf) { @@ -243,6 +261,7 @@ void tipc_named_node_up(unsigned long nodearg) read_lock_bh(&tipc_nametbl_lock); named_distribute(&message_list, node, &publ_cluster, max_item_buf); + named_distribute(&message_list, node, &publ_zone, max_item_buf); read_unlock_bh(&tipc_nametbl_lock); tipc_link_send_names(&message_list, (u32)node); @@ -340,11 +359,13 @@ void tipc_named_recv(struct sk_buff *buf) void tipc_named_reinit(void) { struct publication *publ; + int scope; write_lock_bh(&tipc_nametbl_lock); - list_for_each_entry(publ, &publ_cluster.list, local_list) - publ->node = tipc_own_addr; + for (scope = TIPC_ZONE_SCOPE; scope <= TIPC_CLUSTER_SCOPE; scope++) + list_for_each_entry(publ, &publ_lists[scope]->list, local_list) + publ->node = tipc_own_addr; write_unlock_bh(&tipc_nametbl_lock); } -- 2.7.4