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tipc: make tipc node table aware of net namespace

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Global variables associated with node table are below:
- node table list (node_htable)
- node hash table list (tipc_node_list)
- node table lock (node_list_lock)
- node number counter (tipc_num_nodes)
- node link number counter (tipc_num_links)

To make node table support namespace, above global variables must be
moved to tipc_net structure in order to keep secret for different
namespaces. As a consequence, these variables are allocated and
initialized when namespace is created, and deallocated when namespace
is destroyed. After the change, functions associated with these
variables have to utilize a namespace pointer to access them. So
adding namespace pointer as a parameter of these functions is the
major change made in the commit.

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 15:27:05 +08:00
committed by David S. Miller
parent c93d3baa24
commit f2f9800d49
21 changed files with 329 additions and 244 deletions
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25
net/tipc/bearer.c
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@@ -69,7 +69,8 @@ static const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
static void bearer_disable(struct tipc_bearer *b_ptr, bool shutting_down);
static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
bool shutting_down);
/**
* tipc_media_find - locates specified media object by name
@@ -364,7 +365,7 @@ restart:
res = tipc_disc_create(net, b_ptr, &b_ptr->bcast_addr);
if (res) {
bearer_disable(b_ptr, false);
bearer_disable(net, b_ptr, false);
pr_warn("Bearer <%s> rejected, discovery object creation failed\n",
name);
return -EINVAL;
@@ -384,7 +385,7 @@ restart:
static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b_ptr)
{
pr_info("Resetting bearer <%s>\n", b_ptr->name);
tipc_link_reset_list(b_ptr->identity);
tipc_link_reset_list(net, b_ptr->identity);
tipc_disc_reset(net, b_ptr);
return 0;
}
@@ -394,14 +395,15 @@ static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b_ptr)
*
* Note: This routine assumes caller holds RTNL lock.
*/
static void bearer_disable(struct tipc_bearer *b_ptr, bool shutting_down)
static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
bool shutting_down)
{
u32 i;
pr_info("Disabling bearer <%s>\n", b_ptr->name);
b_ptr->media->disable_media(b_ptr);
tipc_link_delete_list(b_ptr->identity, shutting_down);
tipc_link_delete_list(net, b_ptr->identity, shutting_down);
if (b_ptr->link_req)
tipc_disc_delete(b_ptr->link_req);
@@ -414,7 +416,7 @@ static void bearer_disable(struct tipc_bearer *b_ptr, bool shutting_down)
kfree_rcu(b_ptr, rcu);
}
int tipc_disable_bearer(const char *name)
int tipc_disable_bearer(struct net *net, const char *name)
{
struct tipc_bearer *b_ptr;
int res;
@@ -424,7 +426,7 @@ int tipc_disable_bearer(const char *name)
pr_warn("Attempt to disable unknown bearer <%s>\n", name);
res = -EINVAL;
} else {
bearer_disable(b_ptr, false);
bearer_disable(net, b_ptr, false);
res = 0;
}
return res;
@@ -593,7 +595,7 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
break;
case NETDEV_UNREGISTER:
case NETDEV_CHANGENAME:
bearer_disable(b_ptr, false);
bearer_disable(dev_net(dev), b_ptr, false);
break;
}
return NOTIFY_OK;
@@ -626,7 +628,7 @@ void tipc_bearer_cleanup(void)
dev_remove_pack(&tipc_packet_type);
}
void tipc_bearer_stop(void)
void tipc_bearer_stop(struct net *net)
{
struct tipc_bearer *b_ptr;
u32 i;
@@ -634,7 +636,7 @@ void tipc_bearer_stop(void)
for (i = 0; i < MAX_BEARERS; i++) {
b_ptr = rtnl_dereference(bearer_list[i]);
if (b_ptr) {
bearer_disable(b_ptr, true);
bearer_disable(net, b_ptr, true);
bearer_list[i] = NULL;
}
}
@@ -772,6 +774,7 @@ int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
char *name;
struct tipc_bearer *bearer;
struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
struct net *net = genl_info_net(info);
if (!info->attrs[TIPC_NLA_BEARER])
return -EINVAL;
@@ -794,7 +797,7 @@ int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
bearer_disable(bearer, false);
bearer_disable(net, bearer, false);
rtnl_unlock();
return 0;