mirror of
https://github.com/torvalds/linux.git
synced 2024-11-24 05:02:12 +00:00
3e4b6ab58d
Add TIPC_NL_NODE_GET to the new tipc netlink API.
This command can dump the address and node status of all nodes in the
tipc cluster.
Netlink logical layout of returned node/address data:
-> node
-> address
-> up flag
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
177 lines
6.2 KiB
C
177 lines
6.2 KiB
C
/*
|
|
* net/tipc/node.h: Include file for TIPC node management routines
|
|
*
|
|
* Copyright (c) 2000-2006, 2014, Ericsson AB
|
|
* Copyright (c) 2005, 2010-2014, Wind River Systems
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the names of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _TIPC_NODE_H
|
|
#define _TIPC_NODE_H
|
|
|
|
#include "node_subscr.h"
|
|
#include "addr.h"
|
|
#include "net.h"
|
|
#include "bearer.h"
|
|
#include "msg.h"
|
|
|
|
/*
|
|
* Out-of-range value for node signature
|
|
*/
|
|
#define INVALID_NODE_SIG 0x10000
|
|
|
|
/* Flags used to take different actions according to flag type
|
|
* TIPC_WAIT_PEER_LINKS_DOWN: wait to see that peer's links are down
|
|
* TIPC_WAIT_OWN_LINKS_DOWN: wait until peer node is declared down
|
|
* TIPC_NOTIFY_NODE_DOWN: notify node is down
|
|
* TIPC_NOTIFY_NODE_UP: notify node is up
|
|
* TIPC_DISTRIBUTE_NAME: publish or withdraw link state name type
|
|
*/
|
|
enum {
|
|
TIPC_WAIT_PEER_LINKS_DOWN = (1 << 1),
|
|
TIPC_WAIT_OWN_LINKS_DOWN = (1 << 2),
|
|
TIPC_NOTIFY_NODE_DOWN = (1 << 3),
|
|
TIPC_NOTIFY_NODE_UP = (1 << 4),
|
|
TIPC_WAKEUP_USERS = (1 << 5),
|
|
TIPC_WAKEUP_BCAST_USERS = (1 << 6),
|
|
TIPC_NOTIFY_LINK_UP = (1 << 7),
|
|
TIPC_NOTIFY_LINK_DOWN = (1 << 8)
|
|
};
|
|
|
|
/**
|
|
* struct tipc_node_bclink - TIPC node bclink structure
|
|
* @acked: sequence # of last outbound b'cast message acknowledged by node
|
|
* @last_in: sequence # of last in-sequence b'cast message received from node
|
|
* @last_sent: sequence # of last b'cast message sent by node
|
|
* @oos_state: state tracker for handling OOS b'cast messages
|
|
* @deferred_size: number of OOS b'cast messages in deferred queue
|
|
* @deferred_head: oldest OOS b'cast message received from node
|
|
* @deferred_tail: newest OOS b'cast message received from node
|
|
* @reasm_buf: broadcast reassembly queue head from node
|
|
* @recv_permitted: true if node is allowed to receive b'cast messages
|
|
*/
|
|
struct tipc_node_bclink {
|
|
u32 acked;
|
|
u32 last_in;
|
|
u32 last_sent;
|
|
u32 oos_state;
|
|
u32 deferred_size;
|
|
struct sk_buff *deferred_head;
|
|
struct sk_buff *deferred_tail;
|
|
struct sk_buff *reasm_buf;
|
|
bool recv_permitted;
|
|
};
|
|
|
|
/**
|
|
* struct tipc_node - TIPC node structure
|
|
* @addr: network address of node
|
|
* @lock: spinlock governing access to structure
|
|
* @hash: links to adjacent nodes in unsorted hash chain
|
|
* @active_links: pointers to active links to node
|
|
* @links: pointers to all links to node
|
|
* @action_flags: bit mask of different types of node actions
|
|
* @bclink: broadcast-related info
|
|
* @list: links to adjacent nodes in sorted list of cluster's nodes
|
|
* @working_links: number of working links to node (both active and standby)
|
|
* @link_cnt: number of links to node
|
|
* @signature: node instance identifier
|
|
* @link_id: local and remote bearer ids of changing link, if any
|
|
* @nsub: list of "node down" subscriptions monitoring node
|
|
* @rcu: rcu struct for tipc_node
|
|
*/
|
|
struct tipc_node {
|
|
u32 addr;
|
|
spinlock_t lock;
|
|
struct hlist_node hash;
|
|
struct tipc_link *active_links[2];
|
|
u32 act_mtus[2];
|
|
struct tipc_link *links[MAX_BEARERS];
|
|
unsigned int action_flags;
|
|
struct tipc_node_bclink bclink;
|
|
struct list_head list;
|
|
int link_cnt;
|
|
int working_links;
|
|
u32 signature;
|
|
u32 link_id;
|
|
struct list_head nsub;
|
|
struct sk_buff_head waiting_sks;
|
|
struct list_head conn_sks;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
extern struct list_head tipc_node_list;
|
|
|
|
struct tipc_node *tipc_node_find(u32 addr);
|
|
struct tipc_node *tipc_node_create(u32 addr);
|
|
void tipc_node_stop(void);
|
|
void tipc_node_attach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
|
|
void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
|
|
void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
|
|
void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
|
|
int tipc_node_active_links(struct tipc_node *n_ptr);
|
|
int tipc_node_is_up(struct tipc_node *n_ptr);
|
|
struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space);
|
|
struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space);
|
|
int tipc_node_get_linkname(u32 bearer_id, u32 node, char *linkname, size_t len);
|
|
void tipc_node_unlock(struct tipc_node *node);
|
|
int tipc_node_add_conn(u32 dnode, u32 port, u32 peer_port);
|
|
void tipc_node_remove_conn(u32 dnode, u32 port);
|
|
|
|
int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb);
|
|
|
|
static inline void tipc_node_lock(struct tipc_node *node)
|
|
{
|
|
spin_lock_bh(&node->lock);
|
|
}
|
|
|
|
static inline bool tipc_node_blocked(struct tipc_node *node)
|
|
{
|
|
return (node->action_flags & (TIPC_WAIT_PEER_LINKS_DOWN |
|
|
TIPC_NOTIFY_NODE_DOWN | TIPC_WAIT_OWN_LINKS_DOWN));
|
|
}
|
|
|
|
static inline uint tipc_node_get_mtu(u32 addr, u32 selector)
|
|
{
|
|
struct tipc_node *node;
|
|
u32 mtu;
|
|
|
|
node = tipc_node_find(addr);
|
|
|
|
if (likely(node))
|
|
mtu = node->act_mtus[selector & 1];
|
|
else
|
|
mtu = MAX_MSG_SIZE;
|
|
|
|
return mtu;
|
|
}
|
|
|
|
#endif
|