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Message-ID: <1399510480-29558-2-git-send-email-ying.xue@windriver.com>
Date: Thu, 8 May 2014 08:54:39 +0800
From: Ying Xue <ying.xue@...driver.com>
To: <davem@...emloft.net>
CC: <jon.maloy@...csson.com>, <Paul.Gortmaker@...driver.com>,
<erik.hugne@...csson.com>, <netdev@...r.kernel.org>,
<tipc-discussion@...ts.sourceforge.net>
Subject: [PATCH net-next 1/2] tipc: rename enum names of node flags
Rename node flags to action_flags as well as its enum names so
that they can reflect its real meanings.
Signed-off-by: Ying Xue <ying.xue@...driver.com>
Reviewed-by: Jon Maloy <jon.maloy@...csson.com>
---
net/tipc/link.c | 6 +++---
net/tipc/node.c | 17 +++++++++--------
net/tipc/node.h | 29 +++++++++++++----------------
3 files changed, 25 insertions(+), 27 deletions(-)
diff --git a/net/tipc/link.c b/net/tipc/link.c
index dce2bef..26abb16 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1489,12 +1489,12 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
goto unlock_discard;
/* Verify that communication with node is currently allowed */
- if ((n_ptr->flags & TIPC_NODE_DOWN) &&
+ if ((n_ptr->action_flags & TIPC_WAIT_PEER_LINKS_DOWN) &&
msg_user(msg) == LINK_PROTOCOL &&
(msg_type(msg) == RESET_MSG ||
msg_type(msg) == ACTIVATE_MSG) &&
!msg_redundant_link(msg))
- n_ptr->flags &= ~TIPC_NODE_DOWN;
+ n_ptr->action_flags &= ~TIPC_WAIT_PEER_LINKS_DOWN;
if (tipc_node_blocked(n_ptr))
goto unlock_discard;
@@ -1853,7 +1853,7 @@ static void tipc_link_proto_rcv(struct tipc_link *l_ptr, struct sk_buff *buf)
* peer has lost contact -- don't allow peer's links
* to reactivate before we recognize loss & clean up
*/
- l_ptr->owner->flags = TIPC_NODE_RESET;
+ l_ptr->owner->action_flags = TIPC_WAIT_OWN_LINKS_DOWN;
}
link_state_event(l_ptr, RESET_MSG);
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 74efebc..bb66a26 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -108,7 +108,7 @@ struct tipc_node *tipc_node_create(u32 addr)
break;
}
list_add_tail_rcu(&n_ptr->list, &temp_node->list);
- n_ptr->flags = TIPC_NODE_DOWN;
+ n_ptr->action_flags = TIPC_WAIT_PEER_LINKS_DOWN;
n_ptr->signature = INVALID_NODE_SIG;
tipc_num_nodes++;
@@ -267,7 +267,7 @@ void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
static void node_established_contact(struct tipc_node *n_ptr)
{
- n_ptr->flags |= TIPC_NODE_UP;
+ n_ptr->action_flags |= TIPC_NOTIFY_NODE_UP;
n_ptr->bclink.oos_state = 0;
n_ptr->bclink.acked = tipc_bclink_get_last_sent();
tipc_bclink_add_node(n_ptr->addr);
@@ -311,7 +311,8 @@ static void node_lost_contact(struct tipc_node *n_ptr)
/* Notify subscribers and prevent re-contact with node until
* cleanup is done.
*/
- n_ptr->flags = TIPC_NODE_DOWN | TIPC_NODE_LOST;
+ n_ptr->action_flags = TIPC_WAIT_PEER_LINKS_DOWN |
+ TIPC_NOTIFY_NODE_DOWN;
}
struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
@@ -459,18 +460,18 @@ void tipc_node_unlock(struct tipc_node *node)
int pkt_sz = 0;
u32 addr = 0;
- if (likely(!node->flags)) {
+ if (likely(!node->action_flags)) {
spin_unlock_bh(&node->lock);
return;
}
- if (node->flags & TIPC_NODE_LOST) {
+ if (node->action_flags & TIPC_NOTIFY_NODE_DOWN) {
list_replace_init(&node->nsub, &nsub_list);
- node->flags &= ~TIPC_NODE_LOST;
+ node->action_flags &= ~TIPC_NOTIFY_NODE_DOWN;
}
- if (node->flags & TIPC_NODE_UP) {
+ if (node->action_flags & TIPC_NOTIFY_NODE_UP) {
link = node->active_links[0];
- node->flags &= ~TIPC_NODE_UP;
+ node->action_flags &= ~TIPC_NOTIFY_NODE_UP;
if (link) {
pkt_sz = ((link->max_pkt - INT_H_SIZE) / ITEM_SIZE) *
ITEM_SIZE;
diff --git a/net/tipc/node.h b/net/tipc/node.h
index 38f710f..3c19113 100644
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -47,20 +47,17 @@
*/
#define INVALID_NODE_SIG 0x10000
-/* Flags used to block (re)establishment of contact with a neighboring node
- * TIPC_NODE_DOWN: indicate node is down and it's used to block the node's
- * links until RESET or ACTIVE message arrives
- * TIPC_NODE_RESET: indicate node is reset
- * TIPC_NODE_LOST: indicate node is lost and it's used to notify subscriptions
- * when node lock is released
- * TIPC_NODE_UP: indicate node is up and it's used to deliver local name table
- * when node lock is released
+/* Flags used to take different actions according to flag type
+ * TIPC_WAIT_PEER_LINKS_DOWN: wait to see that peer's links are down
+ * TIPC_WAIT_OWN_LINKS_DOWN: wait until peer node is declared down
+ * TIPC_NOTIFY_NODE_DOWN: notify node is down
+ * TIPC_NOTIFY_NODE_UP: notify node is up
*/
enum {
- TIPC_NODE_DOWN = (1 << 1),
- TIPC_NODE_RESET = (1 << 2),
- TIPC_NODE_LOST = (1 << 3),
- TIPC_NODE_UP = (1 << 4)
+ TIPC_WAIT_PEER_LINKS_DOWN = (1 << 1),
+ TIPC_WAIT_OWN_LINKS_DOWN = (1 << 2),
+ TIPC_NOTIFY_NODE_DOWN = (1 << 3),
+ TIPC_NOTIFY_NODE_UP = (1 << 4)
};
/**
@@ -96,7 +93,7 @@ struct tipc_node_bclink {
* @hash: links to adjacent nodes in unsorted hash chain
* @active_links: pointers to active links to node
* @links: pointers to all links to node
- * @flags: bit mask of conditions preventing link establishment to node
+ * @action_flags: bit mask of different types of node actions
* @bclink: broadcast-related info
* @list: links to adjacent nodes in sorted list of cluster's nodes
* @working_links: number of working links to node (both active and standby)
@@ -111,7 +108,7 @@ struct tipc_node {
struct hlist_node hash;
struct tipc_link *active_links[2];
struct tipc_link *links[MAX_BEARERS];
- unsigned int flags;
+ unsigned int action_flags;
struct tipc_node_bclink bclink;
struct list_head list;
int link_cnt;
@@ -144,8 +141,8 @@ static inline void tipc_node_lock(struct tipc_node *node)
static inline bool tipc_node_blocked(struct tipc_node *node)
{
- return (node->flags & (TIPC_NODE_DOWN | TIPC_NODE_LOST |
- TIPC_NODE_RESET));
+ return (node->action_flags & (TIPC_WAIT_PEER_LINKS_DOWN |
+ TIPC_NOTIFY_NODE_DOWN | TIPC_WAIT_OWN_LINKS_DOWN));
}
#endif
--
1.7.9.5
--
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