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Commit 38077b8e authored by Jon Maloy's avatar Jon Maloy Committed by David S. Miller
Browse files

tipc: add ability to obtain node availability status from other files 



In the coming commits, functions at the socket level will need the
ability to read the availability status of a given node. We therefore
introduce a new function for this purpose, while renaming the existing
static function currently having the wanted name.

Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Acked-by: default avatarYing Xue <ying.xue@windriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 23998835

net/tipc/node.c

+21 −5
Original line number Diff line number Diff line
@@ -157,7 +157,7 @@ static void tipc_node_timeout(unsigned long data); 
static void tipc_node_fsm_evt(struct tipc_node *n, int evt);

static struct tipc_node *tipc_node_find(struct net *net, u32 addr);

static void tipc_node_put(struct tipc_node *node);

static bool tipc_node_is_up(struct tipc_node *n);

static bool node_is_up(struct tipc_node *n);



struct tipc_sock_conn {

	u32 port;
@@ -657,7 +657,7 @@ static void __tipc_node_link_down(struct tipc_node *n, int *bearer_id, 
		*slot1 = i;

	}



	if (!tipc_node_is_up(n)) {

	if (!node_is_up(n)) {

		if (tipc_link_peer_is_down(l))

			tipc_node_fsm_evt(n, PEER_LOST_CONTACT_EVT);

		tipc_node_fsm_evt(n, SELF_LOST_CONTACT_EVT);
@@ -717,11 +717,27 @@ static void tipc_node_link_down(struct tipc_node *n, int bearer_id, bool delete) 
	tipc_sk_rcv(n->net, &le->inputq);

}



static bool tipc_node_is_up(struct tipc_node *n)

static bool node_is_up(struct tipc_node *n)

{

	return n->active_links[0] != INVALID_BEARER_ID;

}



bool tipc_node_is_up(struct net *net, u32 addr)

{

	struct tipc_node *n;

	bool retval = false;



	if (in_own_node(net, addr))

		return true;



	n = tipc_node_find(net, addr);

	if (!n)

		return false;

	retval = node_is_up(n);

	tipc_node_put(n);

	return retval;

}



void tipc_node_check_dest(struct net *net, u32 onode,

			  struct tipc_bearer *b,

			  u16 capabilities, u32 signature,
@@ -1149,7 +1165,7 @@ static int __tipc_nl_add_node(struct tipc_nl_msg *msg, struct tipc_node *node) 


	if (nla_put_u32(msg->skb, TIPC_NLA_NODE_ADDR, node->addr))

		goto attr_msg_full;

	if (tipc_node_is_up(node))

	if (node_is_up(node))

		if (nla_put_flag(msg->skb, TIPC_NLA_NODE_UP))

			goto attr_msg_full;
@@ -1249,7 +1265,7 @@ void tipc_node_broadcast(struct net *net, struct sk_buff *skb) 
		dst = n->addr;

		if (in_own_node(net, dst))

			continue;

		if (!tipc_node_is_up(n))

		if (!node_is_up(n))

			continue;

		txskb = pskb_copy(skb, GFP_ATOMIC);

		if (!txskb)

net/tipc/node.h

+1 −0
Original line number Diff line number Diff line
@@ -76,6 +76,7 @@ void tipc_node_broadcast(struct net *net, struct sk_buff *skb); 
int tipc_node_add_conn(struct net *net, u32 dnode, u32 port, u32 peer_port);

void tipc_node_remove_conn(struct net *net, u32 dnode, u32 port);

int tipc_node_get_mtu(struct net *net, u32 addr, u32 sel);

bool tipc_node_is_up(struct net *net, u32 addr);

u16 tipc_node_get_capabilities(struct net *net, u32 addr);

int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb);

int tipc_nl_node_dump_link(struct sk_buff *skb, struct netlink_callback *cb);