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tipc: make tipc random value aware of net namespace

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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
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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);