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tipc: simplify resetting and disabling of bearers

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Since commit 4b475e3f2f8e4e241de101c8240f1d74d0470494
("tipc: eliminate delayed link deletion at link failover") the extra
boolean parameter "shutting_down" is not any longer needed for the
functions bearer_disable() and tipc_link_delete_list().

Furhermore, the function tipc_link_reset_links(), called from
bearer_reset()  is now unnecessary. We can just as well delete
all the links, as we do in bearer_disable(), and start over with
creating new links.

This commit introduces those changes.

Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Paul Maloy 2015-05-14 10:46:11 -04:00 committed by David S. Miller
parent c16ead798e
commit b1c29f6b10
3 changed files with 10 additions and 32 deletions
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18
net/tipc/bearer.c
View File

@ -71,8 +71,7 @@ static const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
[TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED }
};
static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
bool shutting_down);
static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr);
/**
* tipc_media_find - locates specified media object by name
@ -324,7 +323,7 @@ static int tipc_enable_bearer(struct net *net, const char *name,
res = tipc_disc_create(net, b_ptr, &b_ptr->bcast_addr);
if (res) {
bearer_disable(net, b_ptr, false);
bearer_disable(net, b_ptr);
pr_warn("Bearer <%s> rejected, discovery object creation failed\n",
name);
return -EINVAL;
@ -344,7 +343,7 @@ static int tipc_enable_bearer(struct net *net, const char *name,
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(net, b_ptr->identity);
tipc_link_delete_list(net, b_ptr->identity);
tipc_disc_reset(net, b_ptr);
return 0;
}
@ -354,8 +353,7 @@ 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 net *net, struct tipc_bearer *b_ptr,
bool shutting_down)
static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
u32 i;
@ -363,7 +361,7 @@ static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
pr_info("Disabling bearer <%s>\n", b_ptr->name);
b_ptr->media->disable_media(b_ptr);
tipc_link_delete_list(net, b_ptr->identity, shutting_down);
tipc_link_delete_list(net, b_ptr->identity);
if (b_ptr->link_req)
tipc_disc_delete(b_ptr->link_req);
@ -541,7 +539,7 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
break;
case NETDEV_UNREGISTER:
case NETDEV_CHANGENAME:
bearer_disable(dev_net(dev), b_ptr, false);
bearer_disable(dev_net(dev), b_ptr);
break;
}
return NOTIFY_OK;
@ -583,7 +581,7 @@ void tipc_bearer_stop(struct net *net)
for (i = 0; i < MAX_BEARERS; i++) {
b_ptr = rtnl_dereference(tn->bearer_list[i]);
if (b_ptr) {
bearer_disable(net, b_ptr, true);
bearer_disable(net, b_ptr);
tn->bearer_list[i] = NULL;
}
}
@ -747,7 +745,7 @@ int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
bearer_disable(net, bearer, false);
bearer_disable(net, bearer);
rtnl_unlock();
return 0;

20
net/tipc/link.c
View File

@ -311,8 +311,7 @@ void tipc_link_delete(struct tipc_link *l)
tipc_link_put(l);
}
void tipc_link_delete_list(struct net *net, unsigned int bearer_id,
bool shutting_down)
void tipc_link_delete_list(struct net *net, unsigned int bearer_id)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_link *link;
@ -476,23 +475,6 @@ void tipc_link_reset(struct tipc_link *l_ptr)
link_reset_statistics(l_ptr);
}
void tipc_link_reset_list(struct net *net, unsigned int bearer_id)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_link *l_ptr;
struct tipc_node *n_ptr;
rcu_read_lock();
list_for_each_entry_rcu(n_ptr, &tn->node_list, list) {
tipc_node_lock(n_ptr);
l_ptr = n_ptr->links[bearer_id];
if (l_ptr)
tipc_link_reset(l_ptr);
tipc_node_unlock(n_ptr);
}
rcu_read_unlock();
}
static void link_activate(struct tipc_link *link)
{
struct tipc_node *node = link->owner;

4
net/tipc/link.h
View File

@ -213,8 +213,7 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
struct tipc_bearer *b_ptr,
const struct tipc_media_addr *media_addr);
void tipc_link_delete(struct tipc_link *link);
void tipc_link_delete_list(struct net *net, unsigned int bearer_id,
bool shutting_down);
void tipc_link_delete_list(struct net *net, unsigned int bearer_id);
void tipc_link_failover_send_queue(struct tipc_link *l_ptr);
void tipc_link_dup_queue_xmit(struct tipc_link *l_ptr, struct tipc_link *dest);
void tipc_link_reset_fragments(struct tipc_link *l_ptr);
@ -223,7 +222,6 @@ int tipc_link_is_active(struct tipc_link *l_ptr);
void tipc_link_purge_queues(struct tipc_link *l_ptr);
void tipc_link_reset_all(struct tipc_node *node);
void tipc_link_reset(struct tipc_link *l_ptr);
void tipc_link_reset_list(struct net *net, unsigned int bearer_id);
int tipc_link_xmit_skb(struct net *net, struct sk_buff *skb, u32 dest,
u32 selector);
int tipc_link_xmit(struct net *net, struct sk_buff_head *list, u32 dest,