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-rw-r--r--net/tipc/node.h127
1 files changed, 9 insertions, 118 deletions
diff --git a/net/tipc/node.h b/net/tipc/node.h
index 6734562d3c6e..f39d9d06e8bb 100644
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -42,23 +42,6 @@
42#include "bearer.h" 42#include "bearer.h"
43#include "msg.h" 43#include "msg.h"
44 44
45/* Out-of-range value for node signature */
46#define INVALID_NODE_SIG 0x10000
47
48#define INVALID_BEARER_ID -1
49
50/* Flags used to take different actions according to flag type
51 * TIPC_NOTIFY_NODE_DOWN: notify node is down
52 * TIPC_NOTIFY_NODE_UP: notify node is up
53 * TIPC_DISTRIBUTE_NAME: publish or withdraw link state name type
54 */
55enum {
56 TIPC_NOTIFY_NODE_DOWN = (1 << 3),
57 TIPC_NOTIFY_NODE_UP = (1 << 4),
58 TIPC_NOTIFY_LINK_UP = (1 << 6),
59 TIPC_NOTIFY_LINK_DOWN = (1 << 7)
60};
61
62/* Optional capabilities supported by this code version 45/* Optional capabilities supported by this code version
63 */ 46 */
64enum { 47enum {
@@ -66,72 +49,8 @@ enum {
66}; 49};
67 50
68#define TIPC_NODE_CAPABILITIES TIPC_BCAST_SYNCH 51#define TIPC_NODE_CAPABILITIES TIPC_BCAST_SYNCH
52#define INVALID_BEARER_ID -1
69 53
70struct tipc_link_entry {
71 struct tipc_link *link;
72 u32 mtu;
73 struct sk_buff_head inputq;
74 struct tipc_media_addr maddr;
75};
76
77struct tipc_bclink_entry {
78 struct tipc_link *link;
79 struct sk_buff_head inputq1;
80 struct sk_buff_head arrvq;
81 struct sk_buff_head inputq2;
82 struct sk_buff_head namedq;
83};
84
85/**
86 * struct tipc_node - TIPC node structure
87 * @addr: network address of node
88 * @ref: reference counter to node object
89 * @lock: spinlock governing access to structure
90 * @net: the applicable net namespace
91 * @hash: links to adjacent nodes in unsorted hash chain
92 * @inputq: pointer to input queue containing messages for msg event
93 * @namedq: pointer to name table input queue with name table messages
94 * @active_links: bearer ids of active links, used as index into links[] array
95 * @links: array containing references to all links to node
96 * @action_flags: bit mask of different types of node actions
97 * @state: connectivity state vs peer node
98 * @sync_point: sequence number where synch/failover is finished
99 * @list: links to adjacent nodes in sorted list of cluster's nodes
100 * @working_links: number of working links to node (both active and standby)
101 * @link_cnt: number of links to node
102 * @capabilities: bitmap, indicating peer node's functional capabilities
103 * @signature: node instance identifier
104 * @link_id: local and remote bearer ids of changing link, if any
105 * @publ_list: list of publications
106 * @rcu: rcu struct for tipc_node
107 */
108struct tipc_node {
109 u32 addr;
110 struct kref kref;
111 spinlock_t lock;
112 struct net *net;
113 struct hlist_node hash;
114 int active_links[2];
115 struct tipc_link_entry links[MAX_BEARERS];
116 struct tipc_bclink_entry bc_entry;
117 int action_flags;
118 struct list_head list;
119 int state;
120 u16 sync_point;
121 int link_cnt;
122 u16 working_links;
123 u16 capabilities;
124 u32 signature;
125 u32 link_id;
126 struct list_head publ_list;
127 struct list_head conn_sks;
128 unsigned long keepalive_intv;
129 struct timer_list timer;
130 struct rcu_head rcu;
131};
132
133struct tipc_node *tipc_node_find(struct net *net, u32 addr);
134void tipc_node_put(struct tipc_node *node);
135void tipc_node_stop(struct net *net); 54void tipc_node_stop(struct net *net);
136void tipc_node_check_dest(struct net *net, u32 onode, 55void tipc_node_check_dest(struct net *net, u32 onode,
137 struct tipc_bearer *bearer, 56 struct tipc_bearer *bearer,
@@ -139,50 +58,22 @@ void tipc_node_check_dest(struct net *net, u32 onode,
139 struct tipc_media_addr *maddr, 58 struct tipc_media_addr *maddr,
140 bool *respond, bool *dupl_addr); 59 bool *respond, bool *dupl_addr);
141void tipc_node_delete_links(struct net *net, int bearer_id); 60void tipc_node_delete_links(struct net *net, int bearer_id);
142void tipc_node_attach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
143void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
144bool tipc_node_is_up(struct tipc_node *n);
145int tipc_node_get_linkname(struct net *net, u32 bearer_id, u32 node, 61int tipc_node_get_linkname(struct net *net, u32 bearer_id, u32 node,
146 char *linkname, size_t len); 62 char *linkname, size_t len);
147void tipc_node_unlock(struct tipc_node *node);
148int tipc_node_xmit(struct net *net, struct sk_buff_head *list, u32 dnode, 63int tipc_node_xmit(struct net *net, struct sk_buff_head *list, u32 dnode,
149 int selector); 64 int selector);
150int tipc_node_xmit_skb(struct net *net, struct sk_buff *skb, u32 dest, 65int tipc_node_xmit_skb(struct net *net, struct sk_buff *skb, u32 dest,
151 u32 selector); 66 u32 selector);
67void tipc_node_subscribe(struct net *net, struct list_head *subscr, u32 addr);
68void tipc_node_unsubscribe(struct net *net, struct list_head *subscr, u32 addr);
69void tipc_node_broadcast(struct net *net, struct sk_buff *skb);
152int tipc_node_add_conn(struct net *net, u32 dnode, u32 port, u32 peer_port); 70int tipc_node_add_conn(struct net *net, u32 dnode, u32 port, u32 peer_port);
153void tipc_node_remove_conn(struct net *net, u32 dnode, u32 port); 71void tipc_node_remove_conn(struct net *net, u32 dnode, u32 port);
72int tipc_node_get_mtu(struct net *net, u32 addr, u32 sel);
154int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb); 73int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb);
155 74int tipc_nl_node_dump_link(struct sk_buff *skb, struct netlink_callback *cb);
156static inline void tipc_node_lock(struct tipc_node *node) 75int tipc_nl_node_reset_link_stats(struct sk_buff *skb, struct genl_info *info);
157{ 76int tipc_nl_node_get_link(struct sk_buff *skb, struct genl_info *info);
158 spin_lock_bh(&node->lock); 77int tipc_nl_node_set_link(struct sk_buff *skb, struct genl_info *info);
159}
160
161static inline struct tipc_link *node_active_link(struct tipc_node *n, int sel)
162{
163 int bearer_id = n->active_links[sel & 1];
164
165 if (unlikely(bearer_id == INVALID_BEARER_ID))
166 return NULL;
167
168 return n->links[bearer_id].link;
169}
170
171static inline unsigned int tipc_node_get_mtu(struct net *net, u32 addr, u32 sel)
172{
173 struct tipc_node *n;
174 int bearer_id;
175 unsigned int mtu = MAX_MSG_SIZE;
176
177 n = tipc_node_find(net, addr);
178 if (unlikely(!n))
179 return mtu;
180
181 bearer_id = n->active_links[sel & 1];
182 if (likely(bearer_id != INVALID_BEARER_ID))
183 mtu = n->links[bearer_id].mtu;
184 tipc_node_put(n);
185 return mtu;
186}
187 78
188#endif 79#endif