2006-01-02 18:04:38 +00:00
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/*
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* net/tipc/node.c: TIPC node management routines
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2007-02-09 14:25:21 +00:00
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*
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2006-01-11 18:14:19 +00:00
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* Copyright (c) 2000-2006, Ericsson AB
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2011-01-07 18:00:11 +00:00
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* Copyright (c) 2005-2006, 2010-2011, Wind River Systems
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2006-01-02 18:04:38 +00:00
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* All rights reserved.
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*
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2006-01-11 12:30:43 +00:00
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* Redistribution and use in source and binary forms, with or without
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2006-01-02 18:04:38 +00:00
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* modification, are permitted provided that the following conditions are met:
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*
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2006-01-11 12:30:43 +00:00
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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2006-01-02 18:04:38 +00:00
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*
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2006-01-11 12:30:43 +00:00
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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2006-01-02 18:04:38 +00:00
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "core.h"
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#include "config.h"
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#include "node.h"
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#include "name_distr.h"
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2008-09-03 06:38:32 +00:00
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static void node_lost_contact(struct tipc_node *n_ptr);
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static void node_established_contact(struct tipc_node *n_ptr);
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2006-01-02 18:04:38 +00:00
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2008-05-21 21:53:00 +00:00
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static DEFINE_SPINLOCK(node_create_lock);
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2010-12-31 18:59:34 +00:00
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u32 tipc_own_tag;
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2006-01-02 18:04:38 +00:00
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2008-05-21 21:53:00 +00:00
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/**
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* tipc_node_create - create neighboring node
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*
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* Currently, this routine is called by neighbor discovery code, which holds
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* net_lock for reading only. We must take node_create_lock to ensure a node
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* isn't created twice if two different bearers discover the node at the same
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* time. (It would be preferable to switch to holding net_lock in write mode,
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* but this is a non-trivial change.)
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*/
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2008-09-03 06:38:32 +00:00
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struct tipc_node *tipc_node_create(u32 addr)
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2006-01-02 18:04:38 +00:00
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{
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2008-09-03 06:38:32 +00:00
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struct tipc_node *n_ptr;
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2010-12-31 18:59:19 +00:00
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u32 n_num;
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2006-01-02 18:04:38 +00:00
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2008-05-21 21:53:00 +00:00
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spin_lock_bh(&node_create_lock);
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2010-12-31 18:59:23 +00:00
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n_ptr = tipc_node_find(addr);
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if (n_ptr) {
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spin_unlock_bh(&node_create_lock);
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return n_ptr;
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2008-05-21 21:53:00 +00:00
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}
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2010-12-31 18:59:23 +00:00
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n_ptr = kzalloc(sizeof(*n_ptr), GFP_ATOMIC);
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2006-06-26 06:52:17 +00:00
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if (!n_ptr) {
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2008-05-21 21:53:00 +00:00
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spin_unlock_bh(&node_create_lock);
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2006-06-26 06:52:17 +00:00
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warn("Node creation failed, no memory\n");
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return NULL;
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}
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n_ptr->addr = addr;
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2010-12-31 18:59:18 +00:00
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spin_lock_init(&n_ptr->lock);
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2006-06-26 06:52:17 +00:00
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INIT_LIST_HEAD(&n_ptr->nsub);
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2010-12-31 18:59:19 +00:00
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n_num = tipc_node(addr);
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tipc_net.nodes[n_num] = n_ptr;
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if (n_num > tipc_net.highest_node)
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tipc_net.highest_node = n_num;
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2006-06-26 06:52:17 +00:00
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2008-05-21 21:53:00 +00:00
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spin_unlock_bh(&node_create_lock);
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2006-01-02 18:04:38 +00:00
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return n_ptr;
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}
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2008-09-03 06:38:32 +00:00
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void tipc_node_delete(struct tipc_node *n_ptr)
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2006-01-02 18:04:38 +00:00
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{
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2010-12-31 18:59:19 +00:00
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u32 n_num;
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2006-01-02 18:04:38 +00:00
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if (!n_ptr)
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return;
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2010-12-31 18:59:19 +00:00
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n_num = tipc_node(n_ptr->addr);
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tipc_net.nodes[n_num] = NULL;
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2006-01-02 18:04:38 +00:00
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kfree(n_ptr);
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2010-12-31 18:59:19 +00:00
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while (!tipc_net.nodes[tipc_net.highest_node])
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if (--tipc_net.highest_node == 0)
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break;
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2006-01-02 18:04:38 +00:00
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}
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/**
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2006-01-17 23:38:21 +00:00
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* tipc_node_link_up - handle addition of link
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2007-02-09 14:25:21 +00:00
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*
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2006-01-02 18:04:38 +00:00
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* Link becomes active (alone or shared) or standby, depending on its priority.
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*/
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2008-09-03 06:38:32 +00:00
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void tipc_node_link_up(struct tipc_node *n_ptr, struct link *l_ptr)
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2006-01-02 18:04:38 +00:00
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{
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struct link **active = &n_ptr->active_links[0];
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2006-06-26 06:52:50 +00:00
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n_ptr->working_links++;
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2006-01-02 18:04:38 +00:00
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info("Established link <%s> on network plane %c\n",
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l_ptr->name, l_ptr->b_ptr->net_plane);
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2007-02-09 14:25:21 +00:00
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2006-01-02 18:04:38 +00:00
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if (!active[0]) {
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active[0] = active[1] = l_ptr;
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node_established_contact(n_ptr);
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return;
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}
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2007-02-09 14:25:21 +00:00
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if (l_ptr->priority < active[0]->priority) {
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2006-06-26 06:52:17 +00:00
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info("New link <%s> becomes standby\n", l_ptr->name);
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2006-01-02 18:04:38 +00:00
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return;
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}
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2006-01-17 23:38:21 +00:00
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tipc_link_send_duplicate(active[0], l_ptr);
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2007-02-09 14:25:21 +00:00
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if (l_ptr->priority == active[0]->priority) {
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2006-01-02 18:04:38 +00:00
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active[0] = l_ptr;
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return;
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}
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2006-06-26 06:52:17 +00:00
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info("Old link <%s> becomes standby\n", active[0]->name);
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if (active[1] != active[0])
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info("Old link <%s> becomes standby\n", active[1]->name);
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2006-01-02 18:04:38 +00:00
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active[0] = active[1] = l_ptr;
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}
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/**
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* node_select_active_links - select active link
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*/
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2008-09-03 06:38:32 +00:00
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static void node_select_active_links(struct tipc_node *n_ptr)
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2006-01-02 18:04:38 +00:00
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{
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struct link **active = &n_ptr->active_links[0];
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u32 i;
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u32 highest_prio = 0;
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2007-02-09 14:25:21 +00:00
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active[0] = active[1] = NULL;
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2006-01-02 18:04:38 +00:00
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for (i = 0; i < MAX_BEARERS; i++) {
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2007-02-09 14:25:21 +00:00
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struct link *l_ptr = n_ptr->links[i];
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2006-01-02 18:04:38 +00:00
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2006-01-17 23:38:21 +00:00
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if (!l_ptr || !tipc_link_is_up(l_ptr) ||
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2006-01-02 18:04:38 +00:00
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(l_ptr->priority < highest_prio))
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continue;
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if (l_ptr->priority > highest_prio) {
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2007-02-09 14:25:21 +00:00
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highest_prio = l_ptr->priority;
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2006-01-02 18:04:38 +00:00
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active[0] = active[1] = l_ptr;
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} else {
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active[1] = l_ptr;
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}
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}
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}
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/**
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2006-01-17 23:38:21 +00:00
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* tipc_node_link_down - handle loss of link
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2006-01-02 18:04:38 +00:00
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*/
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2008-09-03 06:38:32 +00:00
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void tipc_node_link_down(struct tipc_node *n_ptr, struct link *l_ptr)
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2006-01-02 18:04:38 +00:00
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{
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struct link **active;
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2006-06-26 06:52:50 +00:00
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n_ptr->working_links--;
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2006-01-17 23:38:21 +00:00
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if (!tipc_link_is_active(l_ptr)) {
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2006-01-02 18:04:38 +00:00
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info("Lost standby link <%s> on network plane %c\n",
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l_ptr->name, l_ptr->b_ptr->net_plane);
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return;
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}
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info("Lost link <%s> on network plane %c\n",
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l_ptr->name, l_ptr->b_ptr->net_plane);
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active = &n_ptr->active_links[0];
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if (active[0] == l_ptr)
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active[0] = active[1];
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if (active[1] == l_ptr)
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active[1] = active[0];
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if (active[0] == l_ptr)
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node_select_active_links(n_ptr);
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2007-02-09 14:25:21 +00:00
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if (tipc_node_is_up(n_ptr))
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2006-01-17 23:38:21 +00:00
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tipc_link_changeover(l_ptr);
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2007-02-09 14:25:21 +00:00
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else
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2006-01-02 18:04:38 +00:00
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node_lost_contact(n_ptr);
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}
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2008-09-03 06:38:32 +00:00
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int tipc_node_has_active_links(struct tipc_node *n_ptr)
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2006-01-02 18:04:38 +00:00
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{
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2010-08-17 11:00:12 +00:00
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return n_ptr->active_links[0] != NULL;
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2006-01-02 18:04:38 +00:00
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}
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2008-09-03 06:38:32 +00:00
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int tipc_node_has_redundant_links(struct tipc_node *n_ptr)
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2006-01-02 18:04:38 +00:00
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{
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2010-09-22 20:43:57 +00:00
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return n_ptr->working_links > 1;
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2006-01-02 18:04:38 +00:00
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}
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2008-09-03 06:38:32 +00:00
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int tipc_node_is_up(struct tipc_node *n_ptr)
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2006-01-02 18:04:38 +00:00
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{
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2010-12-31 18:59:18 +00:00
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return tipc_node_has_active_links(n_ptr);
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2006-01-02 18:04:38 +00:00
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}
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2008-09-03 06:38:32 +00:00
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struct tipc_node *tipc_node_attach_link(struct link *l_ptr)
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2006-01-02 18:04:38 +00:00
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{
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2008-09-03 06:38:32 +00:00
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struct tipc_node *n_ptr = tipc_node_find(l_ptr->addr);
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2006-01-02 18:04:38 +00:00
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if (!n_ptr)
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2006-01-17 23:38:21 +00:00
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n_ptr = tipc_node_create(l_ptr->addr);
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2007-02-09 14:25:21 +00:00
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if (n_ptr) {
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2006-01-02 18:04:38 +00:00
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u32 bearer_id = l_ptr->b_ptr->identity;
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char addr_string[16];
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2007-02-09 14:25:21 +00:00
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if (n_ptr->link_cnt >= 2) {
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err("Attempt to create third link to %s\n",
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2010-05-11 14:30:12 +00:00
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tipc_addr_string_fill(addr_string, n_ptr->addr));
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2007-02-09 14:25:21 +00:00
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return NULL;
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}
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if (!n_ptr->links[bearer_id]) {
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n_ptr->links[bearer_id] = l_ptr;
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2010-12-31 18:59:16 +00:00
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tipc_net.links++;
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2007-02-09 14:25:21 +00:00
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n_ptr->link_cnt++;
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return n_ptr;
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}
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2010-03-24 07:57:29 +00:00
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err("Attempt to establish second link on <%s> to %s\n",
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2011-01-07 18:00:11 +00:00
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l_ptr->b_ptr->name,
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2010-05-11 14:30:12 +00:00
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tipc_addr_string_fill(addr_string, l_ptr->addr));
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2007-02-09 14:25:21 +00:00
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}
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2006-03-21 06:36:47 +00:00
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return NULL;
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2006-01-02 18:04:38 +00:00
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}
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2008-09-03 06:38:32 +00:00
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void tipc_node_detach_link(struct tipc_node *n_ptr, struct link *l_ptr)
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2006-01-02 18:04:38 +00:00
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{
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2006-03-21 06:36:47 +00:00
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n_ptr->links[l_ptr->b_ptr->identity] = NULL;
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2010-12-31 18:59:16 +00:00
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tipc_net.links--;
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2006-01-02 18:04:38 +00:00
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n_ptr->link_cnt--;
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}
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/*
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* Routing table management - five cases to handle:
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*
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* 1: A link towards a zone/cluster external node comes up.
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2007-02-09 14:25:21 +00:00
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* => Send a multicast message updating routing tables of all
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* system nodes within own cluster that the new destination
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* can be reached via this node.
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2006-01-02 18:04:38 +00:00
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* (node.establishedContact()=>cluster.multicastNewRoute())
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*
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* 2: A link towards a slave node comes up.
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2007-02-09 14:25:21 +00:00
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* => Send a multicast message updating routing tables of all
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* system nodes within own cluster that the new destination
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* can be reached via this node.
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2006-01-02 18:04:38 +00:00
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* (node.establishedContact()=>cluster.multicastNewRoute())
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2007-02-09 14:25:21 +00:00
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* => Send a message to the slave node about existence
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2006-01-02 18:04:38 +00:00
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* of all system nodes within cluster:
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* (node.establishedContact()=>cluster.sendLocalRoutes())
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*
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* 3: A new cluster local system node becomes available.
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* => Send message(s) to this particular node containing
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* information about all cluster external and slave
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* nodes which can be reached via this node.
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* (node.establishedContact()==>network.sendExternalRoutes())
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* (node.establishedContact()==>network.sendSlaveRoutes())
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2007-02-09 14:25:21 +00:00
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* => Send messages to all directly connected slave nodes
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2006-01-02 18:04:38 +00:00
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* containing information about the existence of the new node
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|
|
* (node.establishedContact()=>cluster.multicastNewRoute())
|
2007-02-09 14:25:21 +00:00
|
|
|
*
|
2006-01-02 18:04:38 +00:00
|
|
|
* 4: The link towards a zone/cluster external node or slave
|
|
|
|
* node goes down.
|
2007-02-09 14:25:21 +00:00
|
|
|
* => Send a multcast message updating routing tables of all
|
2006-01-02 18:04:38 +00:00
|
|
|
* nodes within cluster that the new destination can not any
|
|
|
|
* longer be reached via this node.
|
|
|
|
* (node.lostAllLinks()=>cluster.bcastLostRoute())
|
|
|
|
*
|
|
|
|
* 5: A cluster local system node becomes unavailable.
|
|
|
|
* => Remove all references to this node from the local
|
|
|
|
* routing tables. Note: This is a completely node
|
|
|
|
* local operation.
|
|
|
|
* (node.lostAllLinks()=>network.removeAsRouter())
|
2007-02-09 14:25:21 +00:00
|
|
|
* => Send messages to all directly connected slave nodes
|
2006-01-02 18:04:38 +00:00
|
|
|
* containing information about loss of the node
|
|
|
|
* (node.establishedContact()=>cluster.multicastLostRoute())
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
2008-09-03 06:38:32 +00:00
|
|
|
static void node_established_contact(struct tipc_node *n_ptr)
|
2006-01-02 18:04:38 +00:00
|
|
|
{
|
2010-12-31 18:59:18 +00:00
|
|
|
tipc_k_signal((Handler)tipc_named_node_up, n_ptr->addr);
|
2006-01-02 18:04:38 +00:00
|
|
|
|
2007-02-09 14:25:21 +00:00
|
|
|
/* Syncronize broadcast acks */
|
|
|
|
n_ptr->bclink.acked = tipc_bclink_get_last_sent();
|
2006-01-02 18:04:38 +00:00
|
|
|
|
|
|
|
if (n_ptr->bclink.supported) {
|
2010-12-31 18:59:19 +00:00
|
|
|
tipc_nmap_add(&tipc_bcast_nmap, n_ptr->addr);
|
2006-01-02 18:04:38 +00:00
|
|
|
if (n_ptr->addr < tipc_own_addr)
|
|
|
|
tipc_own_tag++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-08-17 11:00:16 +00:00
|
|
|
static void node_cleanup_finished(unsigned long node_addr)
|
|
|
|
{
|
|
|
|
struct tipc_node *n_ptr;
|
|
|
|
|
|
|
|
read_lock_bh(&tipc_net_lock);
|
|
|
|
n_ptr = tipc_node_find(node_addr);
|
|
|
|
if (n_ptr) {
|
|
|
|
tipc_node_lock(n_ptr);
|
|
|
|
n_ptr->cleanup_required = 0;
|
|
|
|
tipc_node_unlock(n_ptr);
|
|
|
|
}
|
|
|
|
read_unlock_bh(&tipc_net_lock);
|
|
|
|
}
|
|
|
|
|
2008-09-03 06:38:32 +00:00
|
|
|
static void node_lost_contact(struct tipc_node *n_ptr)
|
2006-01-02 18:04:38 +00:00
|
|
|
{
|
2011-02-23 18:51:15 +00:00
|
|
|
struct tipc_node_subscr *ns;
|
2006-01-02 18:04:38 +00:00
|
|
|
char addr_string[16];
|
|
|
|
u32 i;
|
|
|
|
|
2007-02-09 14:25:21 +00:00
|
|
|
/* Clean up broadcast reception remains */
|
|
|
|
n_ptr->bclink.gap_after = n_ptr->bclink.gap_to = 0;
|
|
|
|
while (n_ptr->bclink.deferred_head) {
|
2010-12-31 18:59:32 +00:00
|
|
|
struct sk_buff *buf = n_ptr->bclink.deferred_head;
|
2007-02-09 14:25:21 +00:00
|
|
|
n_ptr->bclink.deferred_head = buf->next;
|
|
|
|
buf_discard(buf);
|
|
|
|
}
|
|
|
|
if (n_ptr->bclink.defragm) {
|
|
|
|
buf_discard(n_ptr->bclink.defragm);
|
|
|
|
n_ptr->bclink.defragm = NULL;
|
|
|
|
}
|
|
|
|
|
2010-12-31 18:59:18 +00:00
|
|
|
if (n_ptr->bclink.supported) {
|
2010-12-31 18:59:19 +00:00
|
|
|
tipc_bclink_acknowledge(n_ptr,
|
|
|
|
mod(n_ptr->bclink.acked + 10000));
|
|
|
|
tipc_nmap_remove(&tipc_bcast_nmap, n_ptr->addr);
|
2010-12-31 18:59:18 +00:00
|
|
|
if (n_ptr->addr < tipc_own_addr)
|
|
|
|
tipc_own_tag--;
|
2006-01-02 18:04:38 +00:00
|
|
|
}
|
|
|
|
|
2007-02-09 14:25:21 +00:00
|
|
|
info("Lost contact with %s\n",
|
2010-05-11 14:30:12 +00:00
|
|
|
tipc_addr_string_fill(addr_string, n_ptr->addr));
|
2006-01-02 18:04:38 +00:00
|
|
|
|
|
|
|
/* Abort link changeover */
|
|
|
|
for (i = 0; i < MAX_BEARERS; i++) {
|
|
|
|
struct link *l_ptr = n_ptr->links[i];
|
2007-02-09 14:25:21 +00:00
|
|
|
if (!l_ptr)
|
2006-01-02 18:04:38 +00:00
|
|
|
continue;
|
|
|
|
l_ptr->reset_checkpoint = l_ptr->next_in_no;
|
|
|
|
l_ptr->exp_msg_count = 0;
|
2006-01-17 23:38:21 +00:00
|
|
|
tipc_link_reset_fragments(l_ptr);
|
2006-01-02 18:04:38 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Notify subscribers */
|
2011-02-23 18:51:15 +00:00
|
|
|
list_for_each_entry(ns, &n_ptr->nsub, nodesub_list) {
|
|
|
|
if (ns->handle_node_down) {
|
|
|
|
tipc_k_signal((Handler)ns->handle_node_down,
|
|
|
|
(unsigned long)ns->usr_handle);
|
|
|
|
ns->handle_node_down = NULL;
|
|
|
|
}
|
2006-01-02 18:04:38 +00:00
|
|
|
}
|
2010-08-17 11:00:16 +00:00
|
|
|
|
|
|
|
/* Prevent re-contact with node until all cleanup is done */
|
|
|
|
|
|
|
|
n_ptr->cleanup_required = 1;
|
|
|
|
tipc_k_signal((Handler)node_cleanup_finished, n_ptr->addr);
|
2006-01-02 18:04:38 +00:00
|
|
|
}
|
|
|
|
|
2006-01-17 23:38:21 +00:00
|
|
|
struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
|
2006-01-02 18:04:38 +00:00
|
|
|
{
|
|
|
|
u32 domain;
|
|
|
|
struct sk_buff *buf;
|
2008-09-03 06:38:32 +00:00
|
|
|
struct tipc_node *n_ptr;
|
2007-02-09 14:25:21 +00:00
|
|
|
struct tipc_node_info node_info;
|
2006-06-29 19:33:20 +00:00
|
|
|
u32 payload_size;
|
2010-12-31 18:59:23 +00:00
|
|
|
u32 n_num;
|
2006-01-02 18:04:38 +00:00
|
|
|
|
|
|
|
if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR))
|
2006-01-17 23:38:21 +00:00
|
|
|
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
|
2006-01-02 18:04:38 +00:00
|
|
|
|
2006-11-08 08:19:09 +00:00
|
|
|
domain = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
|
2006-01-17 23:38:21 +00:00
|
|
|
if (!tipc_addr_domain_valid(domain))
|
|
|
|
return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
|
|
|
|
" (network address)");
|
2006-01-02 18:04:38 +00:00
|
|
|
|
2008-07-15 05:44:58 +00:00
|
|
|
read_lock_bh(&tipc_net_lock);
|
2010-12-31 18:59:23 +00:00
|
|
|
if (!tipc_net.nodes) {
|
2008-07-15 05:44:58 +00:00
|
|
|
read_unlock_bh(&tipc_net_lock);
|
2007-02-09 14:25:21 +00:00
|
|
|
return tipc_cfg_reply_none();
|
2008-07-15 05:44:58 +00:00
|
|
|
}
|
2006-01-02 18:04:38 +00:00
|
|
|
|
2010-12-31 18:59:17 +00:00
|
|
|
/* For now, get space for all other nodes */
|
2006-01-02 18:04:38 +00:00
|
|
|
|
2010-12-31 18:59:23 +00:00
|
|
|
payload_size = TLV_SPACE(sizeof(node_info)) *
|
|
|
|
(tipc_net.highest_node - 1);
|
2008-07-15 05:44:58 +00:00
|
|
|
if (payload_size > 32768u) {
|
|
|
|
read_unlock_bh(&tipc_net_lock);
|
2006-06-29 19:33:20 +00:00
|
|
|
return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
|
|
|
|
" (too many nodes)");
|
2008-07-15 05:44:58 +00:00
|
|
|
}
|
2006-06-29 19:33:20 +00:00
|
|
|
buf = tipc_cfg_reply_alloc(payload_size);
|
2008-07-15 05:44:58 +00:00
|
|
|
if (!buf) {
|
|
|
|
read_unlock_bh(&tipc_net_lock);
|
2006-01-02 18:04:38 +00:00
|
|
|
return NULL;
|
2008-07-15 05:44:58 +00:00
|
|
|
}
|
2006-01-02 18:04:38 +00:00
|
|
|
|
|
|
|
/* Add TLVs for all nodes in scope */
|
|
|
|
|
2010-12-31 18:59:23 +00:00
|
|
|
for (n_num = 1; n_num <= tipc_net.highest_node; n_num++) {
|
|
|
|
n_ptr = tipc_net.nodes[n_num];
|
|
|
|
if (!n_ptr || !tipc_in_scope(domain, n_ptr->addr))
|
2006-01-02 18:04:38 +00:00
|
|
|
continue;
|
2007-02-09 14:25:21 +00:00
|
|
|
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,
|
2006-01-17 23:38:21 +00:00
|
|
|
&node_info, sizeof(node_info));
|
2006-01-02 18:04:38 +00:00
|
|
|
}
|
|
|
|
|
2008-07-15 05:44:58 +00:00
|
|
|
read_unlock_bh(&tipc_net_lock);
|
2006-01-02 18:04:38 +00:00
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
|
2006-01-17 23:38:21 +00:00
|
|
|
struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space)
|
2006-01-02 18:04:38 +00:00
|
|
|
{
|
|
|
|
u32 domain;
|
|
|
|
struct sk_buff *buf;
|
2008-09-03 06:38:32 +00:00
|
|
|
struct tipc_node *n_ptr;
|
2007-02-09 14:25:21 +00:00
|
|
|
struct tipc_link_info link_info;
|
2006-06-29 19:33:20 +00:00
|
|
|
u32 payload_size;
|
2010-12-31 18:59:23 +00:00
|
|
|
u32 n_num;
|
2006-01-02 18:04:38 +00:00
|
|
|
|
|
|
|
if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR))
|
2006-01-17 23:38:21 +00:00
|
|
|
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
|
2006-01-02 18:04:38 +00:00
|
|
|
|
2006-11-08 08:19:09 +00:00
|
|
|
domain = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
|
2006-01-17 23:38:21 +00:00
|
|
|
if (!tipc_addr_domain_valid(domain))
|
|
|
|
return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
|
|
|
|
" (network address)");
|
2006-01-02 18:04:38 +00:00
|
|
|
|
2007-02-09 14:25:21 +00:00
|
|
|
if (tipc_mode != TIPC_NET_MODE)
|
|
|
|
return tipc_cfg_reply_none();
|
|
|
|
|
2008-07-15 05:44:58 +00:00
|
|
|
read_lock_bh(&tipc_net_lock);
|
|
|
|
|
2006-06-29 19:33:20 +00:00
|
|
|
/* Get space for all unicast links + multicast link */
|
|
|
|
|
2010-12-31 18:59:16 +00:00
|
|
|
payload_size = TLV_SPACE(sizeof(link_info)) * (tipc_net.links + 1);
|
2008-07-15 05:44:58 +00:00
|
|
|
if (payload_size > 32768u) {
|
|
|
|
read_unlock_bh(&tipc_net_lock);
|
2006-06-29 19:33:20 +00:00
|
|
|
return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
|
|
|
|
" (too many links)");
|
2008-07-15 05:44:58 +00:00
|
|
|
}
|
2006-06-29 19:33:20 +00:00
|
|
|
buf = tipc_cfg_reply_alloc(payload_size);
|
2008-07-15 05:44:58 +00:00
|
|
|
if (!buf) {
|
|
|
|
read_unlock_bh(&tipc_net_lock);
|
2006-01-02 18:04:38 +00:00
|
|
|
return NULL;
|
2008-07-15 05:44:58 +00:00
|
|
|
}
|
2006-01-02 18:04:38 +00:00
|
|
|
|
|
|
|
/* Add TLV for broadcast link */
|
|
|
|
|
2011-02-23 16:44:49 +00:00
|
|
|
link_info.dest = htonl(tipc_cluster_mask(tipc_own_addr));
|
2007-02-09 14:25:21 +00:00
|
|
|
link_info.up = htonl(1);
|
2009-03-19 02:11:29 +00:00
|
|
|
strlcpy(link_info.str, tipc_bclink_name, TIPC_MAX_LINK_NAME);
|
2006-01-17 23:38:21 +00:00
|
|
|
tipc_cfg_append_tlv(buf, TIPC_TLV_LINK_INFO, &link_info, sizeof(link_info));
|
2006-01-02 18:04:38 +00:00
|
|
|
|
|
|
|
/* Add TLVs for any other links in scope */
|
|
|
|
|
2010-12-31 18:59:23 +00:00
|
|
|
for (n_num = 1; n_num <= tipc_net.highest_node; n_num++) {
|
2007-02-09 14:25:21 +00:00
|
|
|
u32 i;
|
2006-01-02 18:04:38 +00:00
|
|
|
|
2010-12-31 18:59:23 +00:00
|
|
|
n_ptr = tipc_net.nodes[n_num];
|
|
|
|
if (!n_ptr || !tipc_in_scope(domain, n_ptr->addr))
|
2006-01-02 18:04:38 +00:00
|
|
|
continue;
|
2008-07-15 05:44:58 +00:00
|
|
|
tipc_node_lock(n_ptr);
|
2007-02-09 14:25:21 +00:00
|
|
|
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,
|
2006-01-17 23:38:21 +00:00
|
|
|
&link_info, sizeof(link_info));
|
2007-02-09 14:25:21 +00:00
|
|
|
}
|
2008-07-15 05:44:58 +00:00
|
|
|
tipc_node_unlock(n_ptr);
|
2006-01-02 18:04:38 +00:00
|
|
|
}
|
|
|
|
|
2008-07-15 05:44:58 +00:00
|
|
|
read_unlock_bh(&tipc_net_lock);
|
2006-01-02 18:04:38 +00:00
|
|
|
return buf;
|
|
|
|
}
|