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tipc: make tipc socket support net namespace

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Now tipc socket table is statically allocated as a global variable.
Through it, we can look up one socket instance with port ID, insert
a new socket instance to the table, and delete a socket from the
table. But when tipc supports net namespace, each namespace must own
its specific socket table. So the global variable of socket table
must be redefined in tipc_net structure. As a concequence, a new
socket table will be allocated when a new namespace is created, and
a socket table will be deallocated when namespace is destroyed.

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 15:27:08 +08:00 • committed by David S. Miller
parent 1da465683a
commit e05b31f4bf
6 changed files with 43 additions and 33 deletions
Download patch file Download diff file Expand all files Collapse all files

12
net/tipc/core.c
View file

@ -55,17 +55,20 @@ int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
static int __net_init tipc_init_net(struct net *net)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
int err;
tn->net_id = 4711;
INIT_LIST_HEAD(&tn->node_list);
spin_lock_init(&tn->node_list_lock);
return 0;
err = tipc_sk_rht_init(net);
return err;
}
static void __net_exit tipc_exit_net(struct net *net)
{
tipc_net_stop(net);
tipc_sk_rht_destroy(net);
}
static struct pernet_operations tipc_net_ops = {
@ -95,10 +98,6 @@ static int __init tipc_init(void)
if (err)
goto out_pernet;
err = tipc_sk_rht_init();
if (err)
goto out_reftbl;
err = tipc_nametbl_init();
if (err)
goto out_nametbl;
@ -136,8 +135,6 @@ out_socket:
out_netlink:
tipc_nametbl_stop();
out_nametbl:
tipc_sk_rht_destroy();
out_reftbl:
unregister_pernet_subsys(&tipc_net_ops);
out_pernet:
pr_err("Unable to start in single node mode\n");
@ -153,7 +150,6 @@ static void __exit tipc_exit(void)
tipc_nametbl_stop();
tipc_socket_stop();
tipc_unregister_sysctl();
tipc_sk_rht_destroy();
pr_info("Deactivated\n");
}