diff options
Diffstat (limited to 'net/tipc/node.c')
| -rw-r--r-- | net/tipc/node.c | 336 | 
1 files changed, 110 insertions, 226 deletions
| diff --git a/net/tipc/node.c b/net/tipc/node.c index 8d353ec77a66..86152de8248d 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -35,22 +35,14 @@   */  #include "core.h" -#include "config.h" +#include "link.h"  #include "node.h"  #include "name_distr.h"  #include "socket.h" -#define NODE_HTABLE_SIZE 512 -  static void node_lost_contact(struct tipc_node *n_ptr);  static void node_established_contact(struct tipc_node *n_ptr); -static struct hlist_head node_htable[NODE_HTABLE_SIZE]; -LIST_HEAD(tipc_node_list); -static u32 tipc_num_nodes; -static u32 tipc_num_links; -static DEFINE_SPINLOCK(node_list_lock); -  struct tipc_sock_conn {  	u32 port;  	u32 peer_port; @@ -78,15 +70,17 @@ static unsigned int tipc_hashfn(u32 addr)  /*   * tipc_node_find - locate specified node object, if it exists   */ -struct tipc_node *tipc_node_find(u32 addr) +struct tipc_node *tipc_node_find(struct net *net, u32 addr)  { +	struct tipc_net *tn = net_generic(net, tipc_net_id);  	struct tipc_node *node; -	if (unlikely(!in_own_cluster_exact(addr))) +	if (unlikely(!in_own_cluster_exact(net, addr)))  		return NULL;  	rcu_read_lock(); -	hlist_for_each_entry_rcu(node, &node_htable[tipc_hashfn(addr)], hash) { +	hlist_for_each_entry_rcu(node, &tn->node_htable[tipc_hashfn(addr)], +				 hash) {  		if (node->addr == addr) {  			rcu_read_unlock();  			return node; @@ -96,72 +90,68 @@ struct tipc_node *tipc_node_find(u32 addr)  	return NULL;  } -struct tipc_node *tipc_node_create(u32 addr) +struct tipc_node *tipc_node_create(struct net *net, u32 addr)  { +	struct tipc_net *tn = net_generic(net, tipc_net_id);  	struct tipc_node *n_ptr, *temp_node; -	spin_lock_bh(&node_list_lock); - +	spin_lock_bh(&tn->node_list_lock); +	n_ptr = tipc_node_find(net, addr); +	if (n_ptr) +		goto exit;  	n_ptr = kzalloc(sizeof(*n_ptr), GFP_ATOMIC);  	if (!n_ptr) { -		spin_unlock_bh(&node_list_lock);  		pr_warn("Node creation failed, no memory\n"); -		return NULL; +		goto exit;  	} -  	n_ptr->addr = addr; +	n_ptr->net = net;  	spin_lock_init(&n_ptr->lock);  	INIT_HLIST_NODE(&n_ptr->hash);  	INIT_LIST_HEAD(&n_ptr->list);  	INIT_LIST_HEAD(&n_ptr->publ_list);  	INIT_LIST_HEAD(&n_ptr->conn_sks); -	skb_queue_head_init(&n_ptr->waiting_sks);  	__skb_queue_head_init(&n_ptr->bclink.deferred_queue); - -	hlist_add_head_rcu(&n_ptr->hash, &node_htable[tipc_hashfn(addr)]); - -	list_for_each_entry_rcu(temp_node, &tipc_node_list, list) { +	hlist_add_head_rcu(&n_ptr->hash, &tn->node_htable[tipc_hashfn(addr)]); +	list_for_each_entry_rcu(temp_node, &tn->node_list, list) {  		if (n_ptr->addr < temp_node->addr)  			break;  	}  	list_add_tail_rcu(&n_ptr->list, &temp_node->list);  	n_ptr->action_flags = TIPC_WAIT_PEER_LINKS_DOWN;  	n_ptr->signature = INVALID_NODE_SIG; - -	tipc_num_nodes++; - -	spin_unlock_bh(&node_list_lock); +exit: +	spin_unlock_bh(&tn->node_list_lock);  	return n_ptr;  } -static void tipc_node_delete(struct tipc_node *n_ptr) +static void tipc_node_delete(struct tipc_net *tn, struct tipc_node *n_ptr)  {  	list_del_rcu(&n_ptr->list);  	hlist_del_rcu(&n_ptr->hash);  	kfree_rcu(n_ptr, rcu); - -	tipc_num_nodes--;  } -void tipc_node_stop(void) +void tipc_node_stop(struct net *net)  { +	struct tipc_net *tn = net_generic(net, tipc_net_id);  	struct tipc_node *node, *t_node; -	spin_lock_bh(&node_list_lock); -	list_for_each_entry_safe(node, t_node, &tipc_node_list, list) -		tipc_node_delete(node); -	spin_unlock_bh(&node_list_lock); +	spin_lock_bh(&tn->node_list_lock); +	list_for_each_entry_safe(node, t_node, &tn->node_list, list) +		tipc_node_delete(tn, node); +	spin_unlock_bh(&tn->node_list_lock);  } -int tipc_node_add_conn(u32 dnode, u32 port, u32 peer_port) +int tipc_node_add_conn(struct net *net, u32 dnode, u32 port, u32 peer_port)  {  	struct tipc_node *node;  	struct tipc_sock_conn *conn; -	if (in_own_node(dnode)) +	if (in_own_node(net, dnode))  		return 0; -	node = tipc_node_find(dnode); +	node = tipc_node_find(net, dnode);  	if (!node) {  		pr_warn("Connecting sock to node 0x%x failed\n", dnode);  		return -EHOSTUNREACH; @@ -179,15 +169,15 @@ int tipc_node_add_conn(u32 dnode, u32 port, u32 peer_port)  	return 0;  } -void tipc_node_remove_conn(u32 dnode, u32 port) +void tipc_node_remove_conn(struct net *net, u32 dnode, u32 port)  {  	struct tipc_node *node;  	struct tipc_sock_conn *conn, *safe; -	if (in_own_node(dnode)) +	if (in_own_node(net, dnode))  		return; -	node = tipc_node_find(dnode); +	node = tipc_node_find(net, dnode);  	if (!node)  		return; @@ -201,23 +191,6 @@ void tipc_node_remove_conn(u32 dnode, u32 port)  	tipc_node_unlock(node);  } -void tipc_node_abort_sock_conns(struct list_head *conns) -{ -	struct tipc_sock_conn *conn, *safe; -	struct sk_buff *buf; - -	list_for_each_entry_safe(conn, safe, conns, list) { -		buf = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG, -				      SHORT_H_SIZE, 0, tipc_own_addr, -				      conn->peer_node, conn->port, -				      conn->peer_port, TIPC_ERR_NO_NODE); -		if (likely(buf)) -			tipc_sk_rcv(buf); -		list_del(&conn->list); -		kfree(conn); -	} -} -  /**   * tipc_node_link_up - handle addition of link   * @@ -231,8 +204,8 @@ void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr)  	n_ptr->action_flags |= TIPC_NOTIFY_LINK_UP;  	n_ptr->link_id = l_ptr->peer_bearer_id << 16 | l_ptr->bearer_id; -	pr_info("Established link <%s> on network plane %c\n", -		l_ptr->name, l_ptr->net_plane); +	pr_debug("Established link <%s> on network plane %c\n", +		 l_ptr->name, l_ptr->net_plane);  	if (!active[0]) {  		active[0] = active[1] = l_ptr; @@ -240,7 +213,7 @@ void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr)  		goto exit;  	}  	if (l_ptr->priority < active[0]->priority) { -		pr_info("New link <%s> becomes standby\n", l_ptr->name); +		pr_debug("New link <%s> becomes standby\n", l_ptr->name);  		goto exit;  	}  	tipc_link_dup_queue_xmit(active[0], l_ptr); @@ -248,9 +221,9 @@ void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr)  		active[0] = l_ptr;  		goto exit;  	} -	pr_info("Old link <%s> becomes standby\n", active[0]->name); +	pr_debug("Old link <%s> becomes standby\n", active[0]->name);  	if (active[1] != active[0]) -		pr_info("Old link <%s> becomes standby\n", active[1]->name); +		pr_debug("Old link <%s> becomes standby\n", active[1]->name);  	active[0] = active[1] = l_ptr;  exit:  	/* Leave room for changeover header when returning 'mtu' to users: */ @@ -290,6 +263,7 @@ static void node_select_active_links(struct tipc_node *n_ptr)   */  void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr)  { +	struct tipc_net *tn = net_generic(n_ptr->net, tipc_net_id);  	struct tipc_link **active;  	n_ptr->working_links--; @@ -297,12 +271,12 @@ void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr)  	n_ptr->link_id = l_ptr->peer_bearer_id << 16 | l_ptr->bearer_id;  	if (!tipc_link_is_active(l_ptr)) { -		pr_info("Lost standby link <%s> on network plane %c\n", -			l_ptr->name, l_ptr->net_plane); +		pr_debug("Lost standby link <%s> on network plane %c\n", +			 l_ptr->name, l_ptr->net_plane);  		return;  	} -	pr_info("Lost link <%s> on network plane %c\n", -		l_ptr->name, l_ptr->net_plane); +	pr_debug("Lost link <%s> on network plane %c\n", +		 l_ptr->name, l_ptr->net_plane);  	active = &n_ptr->active_links[0];  	if (active[0] == l_ptr) @@ -324,7 +298,7 @@ void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr)  	}  	/* Loopback link went down? No fragmentation needed from now on. */ -	if (n_ptr->addr == tipc_own_addr) { +	if (n_ptr->addr == tn->own_addr) {  		n_ptr->act_mtus[0] = MAX_MSG_SIZE;  		n_ptr->act_mtus[1] = MAX_MSG_SIZE;  	} @@ -343,9 +317,6 @@ int tipc_node_is_up(struct tipc_node *n_ptr)  void tipc_node_attach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr)  {  	n_ptr->links[l_ptr->bearer_id] = l_ptr; -	spin_lock_bh(&node_list_lock); -	tipc_num_links++; -	spin_unlock_bh(&node_list_lock);  	n_ptr->link_cnt++;  } @@ -357,9 +328,6 @@ void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr)  		if (l_ptr != n_ptr->links[i])  			continue;  		n_ptr->links[i] = NULL; -		spin_lock_bh(&node_list_lock); -		tipc_num_links--; -		spin_unlock_bh(&node_list_lock);  		n_ptr->link_cnt--;  	}  } @@ -368,17 +336,21 @@ static void node_established_contact(struct tipc_node *n_ptr)  {  	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); +	n_ptr->bclink.acked = tipc_bclink_get_last_sent(n_ptr->net); +	tipc_bclink_add_node(n_ptr->net, n_ptr->addr);  }  static void node_lost_contact(struct tipc_node *n_ptr)  {  	char addr_string[16]; -	u32 i; +	struct tipc_sock_conn *conn, *safe; +	struct list_head *conns = &n_ptr->conn_sks; +	struct sk_buff *skb; +	struct tipc_net *tn = net_generic(n_ptr->net, tipc_net_id); +	uint i; -	pr_info("Lost contact with %s\n", -		tipc_addr_string_fill(addr_string, n_ptr->addr)); +	pr_debug("Lost contact with %s\n", +		 tipc_addr_string_fill(addr_string, n_ptr->addr));  	/* Flush broadcast link info associated with lost node */  	if (n_ptr->bclink.recv_permitted) { @@ -389,7 +361,7 @@ static void node_lost_contact(struct tipc_node *n_ptr)  			n_ptr->bclink.reasm_buf = NULL;  		} -		tipc_bclink_remove_node(n_ptr->addr); +		tipc_bclink_remove_node(n_ptr->net, n_ptr->addr);  		tipc_bclink_acknowledge(n_ptr, INVALID_LINK_SEQ);  		n_ptr->bclink.recv_permitted = false; @@ -403,126 +375,33 @@ static void node_lost_contact(struct tipc_node *n_ptr)  		l_ptr->reset_checkpoint = l_ptr->next_in_no;  		l_ptr->exp_msg_count = 0;  		tipc_link_reset_fragments(l_ptr); -	} - -	n_ptr->action_flags &= ~TIPC_WAIT_OWN_LINKS_DOWN; - -	/* Notify subscribers and prevent re-contact with node until -	 * cleanup is done. -	 */ -	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) -{ -	u32 domain; -	struct sk_buff *buf; -	struct tipc_node *n_ptr; -	struct tipc_node_info node_info; -	u32 payload_size; - -	if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR)) -		return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); - -	domain = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); -	if (!tipc_addr_domain_valid(domain)) -		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE -						   " (network address)"); - -	spin_lock_bh(&node_list_lock); -	if (!tipc_num_nodes) { -		spin_unlock_bh(&node_list_lock); -		return tipc_cfg_reply_none(); +		/* Link marked for deletion after failover? => do it now */ +		if (l_ptr->flags & LINK_STOPPED) +			tipc_link_delete(l_ptr);  	} -	/* For now, get space for all other nodes */ -	payload_size = TLV_SPACE(sizeof(node_info)) * tipc_num_nodes; -	if (payload_size > 32768u) { -		spin_unlock_bh(&node_list_lock); -		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED -						   " (too many nodes)"); -	} -	spin_unlock_bh(&node_list_lock); - -	buf = tipc_cfg_reply_alloc(payload_size); -	if (!buf) -		return NULL; - -	/* Add TLVs for all nodes in scope */ -	rcu_read_lock(); -	list_for_each_entry_rcu(n_ptr, &tipc_node_list, list) { -		if (!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)); -		tipc_cfg_append_tlv(buf, TIPC_TLV_NODE_INFO, -				    &node_info, sizeof(node_info)); -	} -	rcu_read_unlock(); -	return buf; -} - -struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space) -{ -	u32 domain; -	struct sk_buff *buf; -	struct tipc_node *n_ptr; -	struct tipc_link_info link_info; -	u32 payload_size; - -	if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR)) -		return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); - -	domain = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); -	if (!tipc_addr_domain_valid(domain)) -		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE -						   " (network address)"); - -	if (!tipc_own_addr) -		return tipc_cfg_reply_none(); - -	spin_lock_bh(&node_list_lock); -	/* Get space for all unicast links + broadcast link */ -	payload_size = TLV_SPACE((sizeof(link_info)) * (tipc_num_links + 1)); -	if (payload_size > 32768u) { -		spin_unlock_bh(&node_list_lock); -		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED -						   " (too many links)"); -	} -	spin_unlock_bh(&node_list_lock); - -	buf = tipc_cfg_reply_alloc(payload_size); -	if (!buf) -		return NULL; +	n_ptr->action_flags &= ~TIPC_WAIT_OWN_LINKS_DOWN; -	/* Add TLV for broadcast link */ -	link_info.dest = htonl(tipc_cluster_mask(tipc_own_addr)); -	link_info.up = htonl(1); -	strlcpy(link_info.str, tipc_bclink_name, TIPC_MAX_LINK_NAME); -	tipc_cfg_append_tlv(buf, TIPC_TLV_LINK_INFO, &link_info, sizeof(link_info)); +	/* Prevent re-contact with node until cleanup is done */ +	n_ptr->action_flags |= TIPC_WAIT_PEER_LINKS_DOWN; -	/* Add TLVs for any other links in scope */ -	rcu_read_lock(); -	list_for_each_entry_rcu(n_ptr, &tipc_node_list, list) { -		u32 i; +	/* Notify publications from this node */ +	n_ptr->action_flags |= TIPC_NOTIFY_NODE_DOWN; -		if (!tipc_in_scope(domain, n_ptr->addr)) -			continue; -		tipc_node_lock(n_ptr); -		for (i = 0; i < MAX_BEARERS; i++) { -			if (!n_ptr->links[i]) -				continue; -			link_info.dest = htonl(n_ptr->addr); -			link_info.up = htonl(tipc_link_is_up(n_ptr->links[i])); -			strcpy(link_info.str, n_ptr->links[i]->name); -			tipc_cfg_append_tlv(buf, TIPC_TLV_LINK_INFO, -					    &link_info, sizeof(link_info)); +	/* Notify sockets connected to node */ +	list_for_each_entry_safe(conn, safe, conns, list) { +		skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG, +				      SHORT_H_SIZE, 0, tn->own_addr, +				      conn->peer_node, conn->port, +				      conn->peer_port, TIPC_ERR_NO_NODE); +		if (likely(skb)) { +			skb_queue_tail(n_ptr->inputq, skb); +			n_ptr->action_flags |= TIPC_MSG_EVT;  		} -		tipc_node_unlock(n_ptr); +		list_del(&conn->list); +		kfree(conn);  	} -	rcu_read_unlock(); -	return buf;  }  /** @@ -534,10 +413,11 @@ struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space)   *   * Returns 0 on success   */ -int tipc_node_get_linkname(u32 bearer_id, u32 addr, char *linkname, size_t len) +int tipc_node_get_linkname(struct net *net, u32 bearer_id, u32 addr, +			   char *linkname, size_t len)  {  	struct tipc_link *link; -	struct tipc_node *node = tipc_node_find(addr); +	struct tipc_node *node = tipc_node_find(net, addr);  	if ((bearer_id >= MAX_BEARERS) || !node)  		return -EINVAL; @@ -554,58 +434,60 @@ int tipc_node_get_linkname(u32 bearer_id, u32 addr, char *linkname, size_t len)  void tipc_node_unlock(struct tipc_node *node)  { -	LIST_HEAD(nsub_list); -	LIST_HEAD(conn_sks); -	struct sk_buff_head waiting_sks; +	struct net *net = node->net;  	u32 addr = 0; -	int flags = node->action_flags; +	u32 flags = node->action_flags;  	u32 link_id = 0; +	struct list_head *publ_list; +	struct sk_buff_head *inputq = node->inputq; +	struct sk_buff_head *namedq; -	if (likely(!flags)) { +	if (likely(!flags || (flags == TIPC_MSG_EVT))) { +		node->action_flags = 0;  		spin_unlock_bh(&node->lock); +		if (flags == TIPC_MSG_EVT) +			tipc_sk_rcv(net, inputq);  		return;  	}  	addr = node->addr;  	link_id = node->link_id; -	__skb_queue_head_init(&waiting_sks); +	namedq = node->namedq; +	publ_list = &node->publ_list; -	if (flags & TIPC_WAKEUP_USERS) -		skb_queue_splice_init(&node->waiting_sks, &waiting_sks); - -	if (flags & TIPC_NOTIFY_NODE_DOWN) { -		list_replace_init(&node->publ_list, &nsub_list); -		list_replace_init(&node->conn_sks, &conn_sks); -	} -	node->action_flags &= ~(TIPC_WAKEUP_USERS | TIPC_NOTIFY_NODE_DOWN | -				TIPC_NOTIFY_NODE_UP | TIPC_NOTIFY_LINK_UP | -				TIPC_NOTIFY_LINK_DOWN | -				TIPC_WAKEUP_BCAST_USERS); +	node->action_flags &= ~(TIPC_MSG_EVT | +				TIPC_NOTIFY_NODE_DOWN | TIPC_NOTIFY_NODE_UP | +				TIPC_NOTIFY_LINK_DOWN | TIPC_NOTIFY_LINK_UP | +				TIPC_WAKEUP_BCAST_USERS | TIPC_BCAST_MSG_EVT | +				TIPC_NAMED_MSG_EVT);  	spin_unlock_bh(&node->lock); -	while (!skb_queue_empty(&waiting_sks)) -		tipc_sk_rcv(__skb_dequeue(&waiting_sks)); - -	if (!list_empty(&conn_sks)) -		tipc_node_abort_sock_conns(&conn_sks); - -	if (!list_empty(&nsub_list)) -		tipc_publ_notify(&nsub_list, addr); +	if (flags & TIPC_NOTIFY_NODE_DOWN) +		tipc_publ_notify(net, publ_list, addr);  	if (flags & TIPC_WAKEUP_BCAST_USERS) -		tipc_bclink_wakeup_users(); +		tipc_bclink_wakeup_users(net);  	if (flags & TIPC_NOTIFY_NODE_UP) -		tipc_named_node_up(addr); +		tipc_named_node_up(net, addr);  	if (flags & TIPC_NOTIFY_LINK_UP) -		tipc_nametbl_publish(TIPC_LINK_STATE, addr, addr, +		tipc_nametbl_publish(net, TIPC_LINK_STATE, addr, addr,  				     TIPC_NODE_SCOPE, link_id, addr);  	if (flags & TIPC_NOTIFY_LINK_DOWN) -		tipc_nametbl_withdraw(TIPC_LINK_STATE, addr, +		tipc_nametbl_withdraw(net, TIPC_LINK_STATE, addr,  				      link_id, addr); + +	if (flags & TIPC_MSG_EVT) +		tipc_sk_rcv(net, inputq); + +	if (flags & TIPC_NAMED_MSG_EVT) +		tipc_named_rcv(net, namedq); + +	if (flags & TIPC_BCAST_MSG_EVT) +		tipc_bclink_input(net);  }  /* Caller should hold node lock for the passed node */ @@ -614,7 +496,7 @@ static int __tipc_nl_add_node(struct tipc_nl_msg *msg, struct tipc_node *node)  	void *hdr;  	struct nlattr *attrs; -	hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family, +	hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,  			  NLM_F_MULTI, TIPC_NL_NODE_GET);  	if (!hdr)  		return -EMSGSIZE; @@ -645,6 +527,8 @@ msg_full:  int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb)  {  	int err; +	struct net *net = sock_net(skb->sk); +	struct tipc_net *tn = net_generic(net, tipc_net_id);  	int done = cb->args[0];  	int last_addr = cb->args[1];  	struct tipc_node *node; @@ -659,7 +543,7 @@ int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb)  	rcu_read_lock(); -	if (last_addr && !tipc_node_find(last_addr)) { +	if (last_addr && !tipc_node_find(net, last_addr)) {  		rcu_read_unlock();  		/* We never set seq or call nl_dump_check_consistent() this  		 * means that setting prev_seq here will cause the consistence @@ -671,7 +555,7 @@ int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb)  		return -EPIPE;  	} -	list_for_each_entry_rcu(node, &tipc_node_list, list) { +	list_for_each_entry_rcu(node, &tn->node_list, list) {  		if (last_addr) {  			if (node->addr == last_addr)  				last_addr = 0; |