tipc: remove active flag from tipc_bearer structure

After the allocation of tipc_bearer structure instance is converted
from statical way to dynamical way, we identify whether a certain
tipc_bearer structure pointer is valid by checking whether the pointer
is NULL or not. So the active flag in tipc_bearer structure becomes
redundant.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/bcast.c

@@ -669,7 +669,7 @@ void tipc_bcbearer_sort(void)
 
 	for (b_index = 0; b_index < MAX_BEARERS; b_index++) {
 		struct tipc_bearer *b = bearer_list[b_index];
-		if (!b || !b->active || !b->nodes.count)
+		if (!b || !b->nodes.count)
 			continue;
 
 		if (!bp_temp[b->priority].primary)

net/tipc/bearer.c

@@ -179,7 +179,7 @@ struct tipc_bearer *tipc_bearer_find(const char *name)
 
 	for (i = 0; i < MAX_BEARERS; i++) {
 		b_ptr = bearer_list[i];
-		if (b_ptr && b_ptr->active && (!strcmp(b_ptr->name, name)))
+		if (b_ptr && (!strcmp(b_ptr->name, name)))
 			return b_ptr;
 	}
 	return NULL;
@@ -204,7 +204,7 @@ struct sk_buff *tipc_bearer_get_names(void)
 			b = bearer_list[j];
 			if (!b)
 				continue;
-			if (b->active && (b->media == media_info_array[i])) {
+			if (b->media == media_info_array[i]) {
 				tipc_cfg_append_tlv(buf, TIPC_TLV_BEARER_NAME,
 						    b->name,
 						    strlen(b->name) + 1);
@@ -288,7 +288,7 @@ restart:
 	with_this_prio = 1;
 	for (i = MAX_BEARERS; i-- != 0; ) {
 		b_ptr = bearer_list[i];
-		if (!b_ptr || !b_ptr->active) {
+		if (!b_ptr) {
 			bearer_id = i;
 			continue;
 		}
@@ -333,7 +333,6 @@ restart:
 	b_ptr->tolerance = m_ptr->tolerance;
 	b_ptr->window = m_ptr->window;
 	b_ptr->net_plane = bearer_id + 'A';
-	b_ptr->active = 1;
 	b_ptr->priority = priority;
 
 	res = tipc_disc_create(b_ptr, &b_ptr->bcast_addr, disc_domain);
@@ -628,7 +627,7 @@ void tipc_bearer_stop(void)
 
 	for (i = 0; i < MAX_BEARERS; i++) {
 		b_ptr = bearer_list[i];
-		if (b_ptr && b_ptr->active) {
+		if (b_ptr) {
 			bearer_disable(b_ptr, true);
 			bearer_list[i] = NULL;
 		}

net/tipc/bearer.h

@@ -118,7 +118,6 @@ struct tipc_media {
  * @tolerance: default link tolerance for bearer
  * @identity: array index of this bearer within TIPC bearer array
  * @link_req: ptr to (optional) structure making periodic link setup requests
- * @active: non-zero if bearer structure is represents a bearer
  * @net_plane: network plane ('A' through 'H') currently associated with bearer
  * @nodes: indicates which nodes in cluster can be reached through bearer
  *
@@ -138,7 +137,6 @@ struct tipc_bearer {
 	u32 tolerance;
 	u32 identity;
 	struct tipc_link_req *link_req;
-	int active;
 	char net_plane;
 	struct tipc_node_map nodes;
 };

net/tipc/link.c

@@ -1458,10 +1458,6 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
 		head = head->next;
 		buf->next = NULL;
 
-		/* Ensure bearer is still enabled */
-		if (unlikely(!b_ptr->active))
-			goto discard;
-
 		/* Ensure message is well-formed */
 		if (unlikely(!link_recv_buf_validate(buf)))
 			goto discard;