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Commit cbeb83ca authored by Jon Paul Maloy's avatar Jon Paul Maloy Committed by David S. Miller
Browse files

tipc: eliminate function tipc_link_activate() 



The function tipc_link_activate() is redundant, since it mostly performs
settings that have already been done in a preceding tipc_link_reset().

There are three exceptions to this:
- The actual state change to TIPC_LINK_WORKING. This should anyway be done
  in the FSM, and not in a separate function.
- Registration of the link with the bearer. This should be done by the
  node, since we don't want the link to have any knowledge about its
  specific bearer.
- Call to tipc_node_link_up() for user access registration. With the new
  role distribution between link aggregation and link level this becomes
  the wrong call order; tipc_node_link_up() should instead be called
  directly as a result of a TIPC_LINK_UP event, hence by the node itself.

This commit implements those changes.

Tested-by: default avatarYing Xue <ying.xue@windriver.com>
Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 29a3060a

net/tipc/link.c

+4 −13
Original line number Diff line number Diff line
@@ -228,6 +228,8 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr, 
	l_ptr->peer_session = WILDCARD_SESSION;

	l_ptr->bearer_id = b_ptr->identity;

	l_ptr->tolerance = b_ptr->tolerance;

	l_ptr->snd_nxt = 1;

	l_ptr->rcv_nxt = 1;

	l_ptr->state = TIPC_LINK_RESETTING;



	l_ptr->pmsg = (struct tipc_msg *)&l_ptr->proto_msg;
@@ -376,6 +378,7 @@ static int tipc_link_fsm_evt(struct tipc_link *l, int evt, 
			pl = node_active_link(l->owner, 0);

			if (pl && link_probing(pl))

				break;

			l->state = TIPC_LINK_WORKING;

			actions |= LINK_ACTIVATE;

			if (!l->owner->working_links)

				actions |= SND_BCAST_SYNC;
@@ -398,6 +401,7 @@ static int tipc_link_fsm_evt(struct tipc_link *l, int evt, 
			pl = node_active_link(l->owner, 0);

			if (pl && link_probing(pl))

				break;

			l->state = TIPC_LINK_WORKING;

			actions |= LINK_ACTIVATE;

			if (!l->owner->working_links)

				actions |= SND_BCAST_SYNC;
@@ -639,19 +643,6 @@ void tipc_link_reset(struct tipc_link *l_ptr) 
	link_reset_statistics(l_ptr);

}



void tipc_link_activate(struct tipc_link *link)

{

	struct tipc_node *node = link->owner;



	link->rcv_nxt = 1;

	link->stats.recv_info = 1;

	link->silent_intv_cnt = 0;

	link->state = TIPC_LINK_WORKING;

	link->exec_mode = TIPC_LINK_OPEN;

	tipc_node_link_up(node, link->bearer_id);

	tipc_bearer_add_dest(node->net, link->bearer_id, link->addr);

}



/**

 * __tipc_link_xmit(): same as tipc_link_xmit, but destlink is known & locked

 * @link: link to use

net/tipc/link.h

+0 −1
Original line number Diff line number Diff line
@@ -223,7 +223,6 @@ void tipc_link_purge_queues(struct tipc_link *l_ptr); 
void tipc_link_purge_backlog(struct tipc_link *l);

void tipc_link_reset_all(struct tipc_node *node);

void tipc_link_reset(struct tipc_link *l_ptr);

void tipc_link_activate(struct tipc_link *link);

int __tipc_link_xmit(struct net *net, struct tipc_link *link,

		     struct sk_buff_head *list);

int tipc_link_xmit(struct tipc_link *link,	struct sk_buff_head *list,

net/tipc/node.c

+4 −2
Original line number Diff line number Diff line
@@ -295,11 +295,13 @@ void tipc_node_link_up(struct tipc_node *n, int bearer_id) 
	n->action_flags |= TIPC_NOTIFY_LINK_UP;

	n->link_id = l->peer_bearer_id << 16 | l->bearer_id;



	tipc_bearer_add_dest(n->net, bearer_id, n->addr);



	pr_debug("Established link <%s> on network plane %c\n",

		 l->name, l->net_plane);



	/* No active links ? => take both active slots */

	if (*slot0 < 0) {

	if (!tipc_node_is_up(n)) {

		*slot0 = bearer_id;

		*slot1 = bearer_id;

		node_established_contact(n);
@@ -896,7 +898,7 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b) 
	rc = tipc_link_rcv(l, skb, &xmitq);



	if (unlikely(rc & TIPC_LINK_UP_EVT))

		tipc_link_activate(l);

		tipc_node_link_up(n, bearer_id);

	if (unlikely(rc & TIPC_LINK_DOWN_EVT))

		tipc_link_reset(l);

	skb = NULL;