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tipc: make tipc random value aware of net namespace 

After namespace is supported, each namespace should own its private
random value. So the global variable representing the random value
must be moved to tipc_net structure.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Tested-by: Tero Aho <Tero.Aho@coriant.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ying Xue 2015-01-09 15:27:12 +08:00 committed by David S. Miller
parent a62fbccecd
commit bafa29e341
4 changed files with 4 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/tipc/core.c
View File

@ -44,9 +44,6 @@
#include <linux/module.h>
/* global variables used by multiple sub-systems within TIPC */
int tipc_random __read_mostly;
/* configurable TIPC parameters */
int tipc_net_id __read_mostly;
int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
@ -58,6 +55,7 @@ static int __net_init tipc_init_net(struct net *net)
tn->net_id = 4711;
tn->own_addr = 0;
get_random_bytes(&tn->random, sizeof(int));
INIT_LIST_HEAD(&tn->node_list);
spin_lock_init(&tn->node_list_lock);
@ -109,8 +107,6 @@ static int __init tipc_init(void)
TIPC_CRITICAL_IMPORTANCE;
sysctl_tipc_rmem[2] = TIPC_CONN_OVERLOAD_LIMIT;
get_random_bytes(&tipc_random, sizeof(tipc_random));
err = tipc_netlink_start();
if (err)
goto out_netlink;

6
net/tipc/core.h
View File

@ -76,14 +76,10 @@ extern int tipc_net_id __read_mostly;
extern int sysctl_tipc_rmem[3] __read_mostly;
extern int sysctl_tipc_named_timeout __read_mostly;
/*
* Other global variables
*/
extern int tipc_random __read_mostly;
struct tipc_net {
u32 own_addr;
int net_id;
int random;
/* Node table and node list */
spinlock_t node_list_lock;

2
net/tipc/discover.c
View File

@ -88,7 +88,7 @@ static void tipc_disc_init_msg(struct net *net, struct sk_buff *buf, u32 type,
msg = buf_msg(buf);
tipc_msg_init(net, msg, LINK_CONFIG, type, INT_H_SIZE, dest_domain);
msg_set_non_seq(msg, 1);
msg_set_node_sig(msg, tipc_random);
msg_set_node_sig(msg, tn->random);
msg_set_dest_domain(msg, dest_domain);
msg_set_bc_netid(msg, tn->net_id);
b_ptr->media->addr2msg(msg_media_addr(msg), &b_ptr->addr);

2
net/tipc/link.c
View File

@ -289,7 +289,7 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
tipc_msg_init(n_ptr->net, msg, LINK_PROTOCOL, RESET_MSG, INT_H_SIZE,
l_ptr->addr);
msg_set_size(msg, sizeof(l_ptr->proto_msg));
msg_set_session(msg, (tipc_random & 0xffff));
msg_set_session(msg, (tn->random & 0xffff));
msg_set_bearer_id(msg, b_ptr->identity);
strcpy((char *)msg_data(msg), if_name);