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tipc: Remove internal linked list of node objects

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Eliminates a sorted list TIPC uses to keep track of the neighboring
nodes it has links to, since this duplicates information already present
in the internal array of node object pointers.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Allan Stephens 2010-12-31 18:59:23 +00:00 committed by David S. Miller
parent b0c1e928c8
commit 5af5479296
1 changed files with 16 additions and 27 deletions
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43
net/tipc/node.c
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@ -43,9 +43,6 @@
static void node_lost_contact(struct tipc_node *n_ptr);
static void node_established_contact(struct tipc_node *n_ptr);
/* sorted list of nodes within cluster */
static struct tipc_node *tipc_nodes = NULL;
static DEFINE_SPINLOCK(node_create_lock);
u32 tipc_own_tag = 0;
@ -63,21 +60,17 @@ u32 tipc_own_tag = 0;
struct tipc_node *tipc_node_create(u32 addr)
{
struct tipc_node *n_ptr;
struct tipc_node **curr_node;
u32 n_num;
spin_lock_bh(&node_create_lock);
for (n_ptr = tipc_nodes; n_ptr; n_ptr = n_ptr->next) {
if (addr < n_ptr->addr)
break;
if (addr == n_ptr->addr) {
spin_unlock_bh(&node_create_lock);
return n_ptr;
}
n_ptr = tipc_node_find(addr);
if (n_ptr) {
spin_unlock_bh(&node_create_lock);
return n_ptr;
}
n_ptr = kzalloc(sizeof(*n_ptr),GFP_ATOMIC);
n_ptr = kzalloc(sizeof(*n_ptr), GFP_ATOMIC);
if (!n_ptr) {
spin_unlock_bh(&node_create_lock);
warn("Node creation failed, no memory\n");
@ -93,15 +86,6 @@ struct tipc_node *tipc_node_create(u32 addr)
if (n_num > tipc_net.highest_node)
tipc_net.highest_node = n_num;
/* Insert node into ordered list */
for (curr_node = &tipc_nodes; *curr_node;
curr_node = &(*curr_node)->next) {
if (addr < (*curr_node)->addr) {
n_ptr->next = *curr_node;
break;
}
}
(*curr_node) = n_ptr;
spin_unlock_bh(&node_create_lock);
return n_ptr;
}
@ -405,6 +389,7 @@ struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
struct tipc_node *n_ptr;
struct tipc_node_info node_info;
u32 payload_size;
u32 n_num;
if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR))
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
@ -415,14 +400,15 @@ struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
" (network address)");
read_lock_bh(&tipc_net_lock);
if (!tipc_nodes) {
if (!tipc_net.nodes) {
read_unlock_bh(&tipc_net_lock);
return tipc_cfg_reply_none();
}
/* For now, get space for all other nodes */
payload_size = TLV_SPACE(sizeof(node_info)) * (tipc_max_nodes - 1);
payload_size = TLV_SPACE(sizeof(node_info)) *
(tipc_net.highest_node - 1);
if (payload_size > 32768u) {
read_unlock_bh(&tipc_net_lock);
return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
@ -436,8 +422,9 @@ struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
/* Add TLVs for all nodes in scope */
for (n_ptr = tipc_nodes; n_ptr; n_ptr = n_ptr->next) {
if (!tipc_in_scope(domain, n_ptr->addr))
for (n_num = 1; n_num <= tipc_net.highest_node; n_num++) {
n_ptr = tipc_net.nodes[n_num];
if (!n_ptr || !tipc_in_scope(domain, n_ptr->addr))
continue;
node_info.addr = htonl(n_ptr->addr);
node_info.up = htonl(tipc_node_is_up(n_ptr));
@ -456,6 +443,7 @@ struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space)
struct tipc_node *n_ptr;
struct tipc_link_info link_info;
u32 payload_size;
u32 n_num;
if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR))
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
@ -493,10 +481,11 @@ struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space)
/* Add TLVs for any other links in scope */
for (n_ptr = tipc_nodes; n_ptr; n_ptr = n_ptr->next) {
for (n_num = 1; n_num <= tipc_net.highest_node; n_num++) {
u32 i;
if (!tipc_in_scope(domain, n_ptr->addr))
n_ptr = tipc_net.nodes[n_num];
if (!n_ptr || !tipc_in_scope(domain, n_ptr->addr))
continue;
tipc_node_lock(n_ptr);
for (i = 0; i < MAX_BEARERS; i++) {